Factual error: One scene shows Muslims in prayer. There, the Muslims go from standing to getting on their knees. The problem with this is while in prayer, Muslims never go directly from standing to being on their knees. First, they would go bend over into a bow with their back perpendicular to their legs, then they would stand again, then go into prostration (on their knees while placing their forehead and nose on the ground) then they would go to to sitting up right on their knees.
Factual error: When Rudy Cafmeyer is watching the TV, there is a foreign language program on. This program then cuts to an interview of the new 1st disciple talking about the murder of the old 1st disciple. The problem is that if the show is in a foreign language, then it makes sense that the interview would have someone translating over the voice.