Charlemagne opponent, 7 letters
Christian foe, once, 7 letters
Crusader's adversary, 7 letters
Crusader's opponent, 7 letters
Fighter in the Crusades, 7 letters
Muslim fighter in the Crusades, 7 letters
Old Muslim people inhabiting most of Yemen's capital (7), 7 letters
Who'd scare an old crusader, 7 letters
(when used broadly) any Arab, 7 letters