In this movie, characters are prominently seen handling apples and pomegranates. Pomegranates were considered the "original" apples, and were symbols of strength to the Persian armies.
The "Hassansins" were modeled on the infamous Persian mystery cult called the Hashshashin, from which the word "assassin" is derived, given their use of terror and assassinations as political leverage. Their leader was named Hassan Ibn Sabbah, whose activities took place in the heart of the Alborz Mountains of northern Iran (the place was called Alamut). Legends have surrounded the indoctrination process of the members of the Hashshashin cult, which are said to involve drugging and mind control. They were likely inserted as an homage to Ubisoft's largest franchise, "Assassin's Creed," which is likewise based on the cult of Hashshashins.
Mentions of God or "the Creator" are references to Zoroastrianism, the religion practiced by Persians until Islam became popular. Zoroastrianism does not have a concrete concept of Hell, despite Nizam mentioning it. Tamina worships an unnamed set of gods, which are briefly presented in juxtaposition to Dastan's beliefs.