Saladin the Victorious (1965) on Netflix

After Saladin's victory over the King of Jerusalem, a peace treaty is signed between them, but the commander of the Crusader army, Renaud de Chatillon, slaughters a group of pilgrims going to Mecca. Saladin then decides to take revenge.

Saladin, ruler of the kingdoms surrounding the Latin state of Jerusalem, is brought to attack the Christians in the Holy Land by the sacking of a convoy of Muslim pilgrims, a group which included his sister. In a short campaign against odds, Jerusalem is taken and almost the entire Middle East is in Muslim hands. Crusade is called again in Europe, and the combined forces of the French king, German emperor, and English king form the 3rd Crusade, under the leadership of Richard the Lionheart of England. Although Accre is taken by the Crusaders, Saladin succeeds in preventing the recapture of Jerusalem, and in the end negotiations between himself and Richard (who Saladin admires as the only honorable leader) leave the Holy Land in Moslem hands.

—Bruce Cameron <dumarest@midcoast.com>