How would I make a Jewish-influenced, but pagan religion?

[Zioneer]

Before we start discussing, don't say Christianity is the pagan religion I'm thinking of. It's a clever joke, but it's just not that funny.

Anyway, onto the main discussion. I'm planning a reboot of my Khazars TL, and want to solve one of the biggest problems; namely, that I know little about Judaism, and have little interest going into the absolute minutiae of the religion as it spreads through all of Russia/Ukraine, etc.

My solution is to have the Rus, while made a tributary by the Khazars, and made to follow a few Jewish laws (the Bene Noach laws, to be exact), they remain somewhat pagan. Hence the title of this thread.

I want to figure out the details of a heavily Judaic Slavic pagan religion. So far, I have the obvious idea of the Rus beginning to claim that they too are descended from the same grandson of Noah the Khazars are, but I can't think of anything else but that.

So I'd like some help. How do I add enough (but not too much) Jewish influence to Rus paganism to make it an entirely different religion than both?