Alternately, maybe have the Caliphate end up losing and one of its successor states or armies merging with the Byzantine Empire and over time having the people convert, especially if the Arabs are willing to assist them in retaking Rome. It would be a slow process, but I could see it becoming appealing. Granted, some of the eating requirements would either have to be removed or be classified as a cultural thing rather than a religious thing.
As such, the Arab armies would assist Rome in taking North Africa and expand more and if they assist in taking Persia, Rome may see great value in the, and their new religion and speed up conversion. It'd require separating Islam from dogmatic Arabic influences, but it would help the faith in the long run
As such, the Arab armies would assist Rome in taking North Africa and expand more and if they assist in taking Persia, Rome may see great value in the, and their new religion and speed up conversion. It'd require separating Islam from dogmatic Arabic influences, but it would help the faith in the long run