Harvey Keitel (with the muscles) and Kate Winslet in the 1999 movie 'Holy Smoke.' The IMDB describes the movie thusly: "While on a journey of discovery in exotic India, beautiful young Ruth Barron falls under the influence of a charismatic religious guru. Her desperate parents then hire PJ Waters, a macho cult de-programmer who confronts Ruth in a remote desert hideaway."
Keitel played the de-programmer, not the guru.
Photo from Miramax Pictures, supplied by WENN.