A quick history in the turning point between the West and the Moslems:

A quick history in the turning point between the West and the Moslems: The Battle of Tours 732 AD.The following opinion was expressed about the Franks by the emir who conquered Spain, and who—had he not been recalled—might have commanded at Tours. It shows what the Arab leaders thought of the men of the North up to the moment of their great disillusionment by “The Hammer.”

From an Arabian Chronicler
Musa being returned to Damascus, the Caliph Abd-el Melek asked of him about his conquests, saying “Now tell me about these Franks—what is their nature?”
“They,” replied Musa, “are a folk right numerous, and full of might: brave and impetuous in the attack, but cowardly and craven in event of defeat.”
“And how has passed the war betwixt them and thyself? Favorably or the reverse?”
“The reverse? No, by Allah and the prophet!” spoke Musa. “Never has a company from my army been beaten. And never have the Moslems hesitated to follow me when I have led them; though they were twoscore to fourscore.”

Isidore of Beja’s Chronicle
The defeat of the Saracen invaders of Frankish lands at Tours (more properly Poitiers) in 732 A.D. was a turning point in history. It is not likely the Muslims, if victorious, would have penetrated, at least at once, far into the north, but they would surely have seized South Gaul, and thence readily have crushed the weak Christian powers of Italy. It is very unfortunate that we do not possess scientific accounts of Charles Martel’s great victory, instead of the interesting but insufficient stories of the old Christian chroniclers.
Then Abderrahman, [the Muslim emir] seeing the land filled with the multitude of his army, crossed the Pyrenees, and traversed the defiles [in the mountains] and the plains, so that he penetrated ravaging and slaying clear into the lands of the Franks. He gave battle to Duke Eudes (of Aquitaine) beyond the Garonne and the Dordogne, and put him to flight—so utterly [was he beaten] that God alone knew the number of the slain and wounded. Whereupon Abderrahman set in pursuit of Eudes; he destroyed palaces, burned churches, and imagined he could pillage the basilica of St. Martin of Tours. It is then that he found himself face to face with the lord of Austrasia, Charles, a mighty warrior from his youth, and trained in all the occasions of arms.
For almost seven days the two armies watched one another, waiting anxiously the moment for joining the struggle. Finally they made ready for combat. And in the shock of the battle the men of the North seemed like North a sea that cannot be moved. Firmly they stood, one close to another, forming as it were a bulwark of ice; and with great blows of their swords they hewed down the Arabs. Drawn up in a band around their chief, the people of the Austrasians carried all before them. Their tireless hands drove their swords down to the breasts [of the foe].
At last night sundered the combatants. The Franks with misgivings lowered their blades, and beholding the numberless tents of the Arabs, prepared themselves for another battle the next day. Very early, when they issued from their retreat, the men of Europe saw the Arab tents ranged still in order, in the same place where they had set up their camp. Unaware that they were utterly empty, and fearful lest within the phalanxes of the Saracens were drawn up for combat, they sent out spies to ascertain the facts. These spies discovered that all the squadrons of the “Ishmaelites” had vanished. In fact, during the night they had fled with the greatest silence, seeking with all speed their home land. The Europeans, uncertain and fearful, lest they were merely hidden in order to come back [to fall upon them] by ambushments, sent scouting parties everywhere, but to their great amazement found nothing. Then without troubling to pursue the fugitives, they contented themselves with sharing the spoils and returned right gladly to their own country.Chronicle of St. Denis
The Muslims planned to go to Tours to destroy the Church of St. Martin, the city, and the whole country. Then came against them the glorious Prince Charles, at the head of his whole force. He drew up his host, and he fought as fiercely as the hungry wolf falls upon the stag. By the grace of Our Lord, he wrought a great slaughter upon the enemies of Christian faith, so that—as history bears witness—he slew in that battle 300,000 men, likewise their king by name Abderrahman. Then was he [Charles] first called “Martel,” for as a hammer of iron, of steel, and of every other metal, even so he dashed: and smote in the battle all his enemies. And what was the greatest marvel of all, he only lost in that battle 1500 men. The tents and harness [of the enemy] were taken; and whatever else they possessed became a prey to him and his followers. Eudes, Duke of Aquitaine, being now reconciled with Prince Charles Martel, later slew as many of the Saracens as he could find who had escaped from the battle.Source.
From: William Stearns Davis, ed., Readings in Ancient History: Illustrative Extracts from the Sources, 2 Vols. (Boston: Allyn and Bacon, 1912-13), Vol. II: Rome and the West, pp. 362-364.
Scanned in and modernized by Dr. Jerome S. Arkenberg, Dept. of History, Cal. State Fullerton. This text is part of the Internet Medieval Source Book. The Sourcebook is a collection of public domain and copy-permitted texts related to medieval and Byzantine history.