International audienceThe reading of Arabic texts shows the complexity of the processes of the Islamization of the central Maghreb throughout the first Muslim period. A massive conversion of the natives took place after the end of the resistance of Numidia, a region marked by the anchoring of the native Christian tradition, Latin and Byzantine. But it did not take long to join the Muslim culture, with the exception of the Christian communities settled in the cities forming the old Byzantine defensive system, which continued to profess their faith until the end of the tenth century. This conversion, in ill-established circumstances, did not totally destroy the Christian tradition, because these new converts continued to oppose the Arab milit...