Religious battles constitute a significant part of the narrative of an epic. Protagonists such as Rostam, Faramarz, Jahangir, Sam, Zaringhaba, and even Garshasb believed their functions to be of a prophetic nature. Within this research, prophetic functions point to the fact that the protagonists of epic narratives believed an important duty of themselves to propagate divine religion. The religion such protagonists are looking to propagate mostly resemble Islamic beliefs. What gives extra importance to this notion is that these protagonists belong to eras before the emergence of Islam, with only their tales being recited by narrators who lived during the reign of Islam. This is the source of the importance of the subject of this research; what impact did the religious beliefs of the narrators of these epics had on the epics’ content. This article investigates the concept of the prophetic functionality of the protagonists in a number of epics post Shahnameh (Kushnameh, Garshasbnameh, Faramarznameh, Samnameh, Jahangirnameh, and Zaringhabanemeh). An investigation of these epics concludes that the Islamic viewpoints of these narrators regarding the religious wars of the Islamic society has left an imprint on the aforementioned works of epic to define their function as propagating divine religion. This viewpoint is prevalent in epics post Shahnameh, since this epic bears a difُference with the beliefs of protagonists in other epics, even though there are traces of religious battles between Gashtasb and Esfandiar and their incentives to propagate monotheism in this epic as well. The Islamic views of the poets of epics that came after Shahnameh affected the protagonists of their works as they uttered their own beliefs through the words and actions of these protagonist.