Asatoma Sadgamaya is a Shanti Mantra (Mantra of peace), it is taken from Brihadaranyaka Upanishads (1.3.28). It is used as a prayer in Indian schools, during spiritual/ religious gatherings , social events and other times; it is believed that the recitation of these verses bring peace. In recent times this peace mantra has been used in the 'Navras' soundtrack from the movie 'The Matrix Revolutions'
Sanskrit Lyrics
असतोमा सद्गमय । तमसोमा ज्योतिर् गमय । मृत्योर्मामृतं गमय ॥ ॐ शान्ति शान्ति शान्तिः ।।