Exorcist: The Beginning (2004) on Netflix

Father Lankester Merrin thinks that he has glimpsed the face of Evil. In the years following World War II, Merrin is relentlessly haunted by memories of the unspeakable brutality perpetrated against the innocent people of his parish during the War. In the wake of all the horror he has seen, both his faith in his fellow man and his faith in the Almighty have deserted him, and he can no longer honestly call himself a man of God. Merrin has traveled far from his native Holland in a desperate attempt to try to forget and escape all the evil that he had witnessed there. While currently in Cairo, Egypt, he is approached by a collector of rare antiquities and asked to participate in a British archeological excavation in the remote Turkana region of Kenya. They have unearthed something extraordinary and unusual...a Christian Byzantine church dating from the 5th century, long before Christianity arrived in East Africa, and in inexplicably perfect condition--as if it had been buried immediately after it was completed. The collector wants Merrin, an Oxford-educated archeologist, to find an ancient relic hidden within the church before the British find it. Interested, Merrin agrees to take the job. But beneath the church, something much older and malevolent sleeps, waiting to be awoken. When the archeologists start excavating, strange things begin occurring, and the local Turkana tribesmen who were hired to work refuse to enter the site. Things only get worse, ultimately resulting in madness and death. Merrin watches helplessly as the atrocities of war are repeated against another innocent village--atrocities he had hoped and prayed never to see again. The blood of innocents flows freely on the East African plane, but the horror has only just begun. In the place where Evil was born, Merrin will finally see its true face.