He venerated the god Vishnu, a deity often depicted as a protector, and installed a statue of the god in Angkor Wat’s central tower. This devotion can also be seen in one of the most remarkable reliefs at Angkor Wat, located in the southeast of the temple. The relief shows a chapter in the Hindu story of creation known as the “churning of the sea of milk.”
As archaeologist Michael Coe writes, the relief “describes how the devas (gods) and the asuras (demons) churned the ocean under the aegis of Vishnu, to produce the divine elixir of immortality,” ("Angkor and the Khmer Civilization," Thames & Hudson, 2003). Scholars consider this relief to be one of the finest art pieces at Angkor Wat.
Suryavarman’s devotion to Vishnu is also shown in the posthumous name he was given, “Paramavishnuloka” which, according to researcher Hélène Legendre-De Koninck, means “he who is in the supreme abode of Vishnu.” ("Angkor Wat: A Royal Temple," VDG, 2001).