Vishnu is the part of god in the Hindu triumvirate (orTrimurti). The triumvirate consists of three parts of gods who are responsible for the creation, upkeep and destruction of the world. The other two parts are Brahma and Shiva.
Vishnu is the Supreme Lord. He is the maintainer or preserver of the Universe . Brahma is the creator and Shiva is the destroyer.
His devotees are called Vaishnavas.
Lord Vishnu Mukti Mantra:
Om Namo Bhagavate Vasudevaya
Meaning : ‘I bow to the Lord who lives in the hearts of all.’
Benefit : This mantra is also known as the liberation mantras as it is believed to relieve the person who is chanting this mantra from all the hardships of life.