Vishnu Gayatri Mantra is one of the most popular Mantras of Lord Vishnu. In deity worship, most Gods and Goddesses are praised with their own Gayatri Mantra. Lord Vishnu Gayatri Mantra is a variation of the most popular Gayatri Mantra.
ॐ श्री विष्णवे च विद्महे वासुदेवाय धीमहि।
तन्नो विष्णुः प्रचोदयात्॥
Om Shri Vishnave Cha Vidmahe Vasudevaya Dhimahi।
Tanno Vishnuh Prachodayat॥
Om, Let me meditate on Lord Vishnu, Oh, Lord Vasudeva, give me higher intellect, and let Lord Vishnu illuminate my mind.