Gayatri Mantra

Mantra:

Om Vajranakhaya Vidmahe
Tiksnadamstraya Dhimahi
Tanno Narasimhah Pracodayat

Meaning:

Om let us meditate the half-man and half-lion form of the Lord Narasimha. May this great God with his nails pierce our ignorance and with his fierce sharp-tooth destroy the demon of darkness and illuminate our mind and understanding.

https://www.google.com/search?q=Om+Vajranakhaya+Vidmahe