The Banu Rabi'ah were descendants of the 10th - century Jarrahid rulers of Palestine .
The Banu Rabi'ah became prominent in Syria as a result of their participation in the Muslim war effort against the Crusaders , who conquered the Syrian ( Levantine ) coastal regions in 1099 .
The Banu Rabi'ah were descendants of the 10th - century Jarrahid rulers of Palestine , and became prominent in Syria as a result of their participation in the Muslim war effort against the Crusaders , who conquered the Syrian ( Levantine ) coastal regions in 1099 .