Avataars of Lord Shiva
The effects of his penance were such that devastating flames of fire manifested from his head. The fire spread in all the three worlds in no time. The deities were terrified by the death and destruction caused by the fire. Brahma, Vishnu and Shiva went to Atri and blessed him. Later on Atris wife Anusuya gave birth to three sons, who in fact were the incarnations of Lord Brahma, Lord Vishnu and Lord Shiva. Lord Brahma incarnation as the Moon, Lord Vishnu as Dutt and Shiva took incarnation as Durvasa.