Maha Sudarshan Yantra is a yantra for protection. The Sudarshan refers to the discus of Vishnu, weapon to punish evil, it is created from the pure flame of the Sun. This Yantra is used to destroy negative energy. God Vishnu is called as a protector of this universe, therefore Mahasudarshan Yantra has protective powers. Following Mantra will be presented for it. “Sri Krishna Govinda Hare Murari Hey Nath Narayana Vasudeva”