An old classic. Watching Regan's head spin while speaking Hindi curses is a surreal experience. The dubbing artists for this 1973 classic gave it a second life in India.
While critics were mixed, the Hindi dubbed version of The Nun was a massive hit on Indian television. The gothic atmosphere combined with heavy Hindi dialogues makes the demon Valak sound like an ancient rakshasa.
Amazon has the largest library of Hindi-dubbed Hollywood content. You can find the entire Conjuring universe, Annabelle, and The Ring here. Look for the "Audio" button and select "Hindi."