The article reveals the interrelationship between myth and religion, fantastics and reality in Goran Petrović’s novel “The Siege of the Church of the Holy Savior”. The provisions on the belonging of thenovel to postmodernism, on the parallels of the “Siege of the Church of the Holy Savior” with the work of the famous Serbian postmodernist writer Milorad Pavić are considered. The presence of elements of postmodernist poetics in Petrović is noted, the possibilities of combination postmodernism and myth, postmodernism and Christianity are explored.