Its a great movie if you don't try to look behind the curtains and act like the priests by not questioning anything, to me it feels like a mish mash of ideas that they only had the budget to explain half of, like the excorcism was great but it being fake didn't really add anything to the movie when on the other hand the cultists are obviously capable of real rituals with that all seeing eye, also acting was great but the plot twists were really predictable, like who wouldn't see it coming that the friendly priest would betray him, or that they are eating human. The last thing Im gonna mention is how the creature at the end seemed a bit off and I would have wanted to see it do more than just emerging from the tomb and look intimidatingly, so yeah 5/10.
