Gurur Brahma Slokam

Gurur Brahma Gurur Vishnu

Gurur Devo Maheshvarah
Guru Sakshat Para Brahma
Tasmai Sri Gurave Namah
Meaning: The Guru is Brahma, the Guru is Vishnu, the Guru Deva is Maheswara (Shiva), the Guru is Verily the Para-Brahman (Supreme Brahman); Salutations to that Guru.