Yeah, well, in my experience, most detractors have F-tier arguments like "jEsUs NeVeR eXiStEd, hurr durr," even though history says different. This is where I take issue with anti-theists over-simplifying the connection between eastern and western theology and philosophy. A lot of times, they are just knocking down a strawman erected by people who proclaim to believe but have never actually read the Bible (or if they did, totally misunderstood it). No, the story of Jesus isn't entirely unique, but then, whose is? However, when you start to get into the more esoteric side of religious evolution, the connection does stand up to scrutiny. Zoroastrianism is more influential than you think, even to this day.

The Varyag's article on the Gnostic Heresies goes into religious evolution briefly, but there is one bit that is missing, and that's contention surrounding the word "Elohim," which used to be a plural word before becoming the name of God (though that gets cleared up in a later article). The merging of all these entities into one is symbolic of Judaism transforming into a monotheistic religion. The Greeks had their own version of this idea called Hermeticism, which maintained that Hermes and Thoth were the same being. This also included Odin once the Romans began trading with the Norse.

Hermeticism is rabbit hole unto itself, but the idea of one-ness is hardly unique to Greek philosophy. One-ness also gets misinterpreted and misrepresented a lot.