You ignore it
You continue watching the movie. The tension in the movie builds as the music gets softer. Suddenly, your cell phone rings and everyone screams. Laughing in embarrassment at being startled, you answer your phone, but no one is there.
You hear some static and tell your friends to be quiet. Then you all hear a low, deep voice saying, "Nothing in my hand I bring." You hang up quickly. What do you do?