How do you talk about spirituality with someone whose religion greatly differs from yours?

My father is a very christian man, I am very much not. I left the church as a teenager and never really looked back, my spirituality is now leaning towards other traditions such as buddhism, witchcraft, and other pagan spiritualities. It’s getting harder to talk about these things with him because of how deeply he believes that his god is the one and only god and if I don’t follow that god then I’m damned. It’s never a fight about it but it would help to get some outside perspective on how best to approach this.
How do you talk about spirituality with someone whose religion greatly differs from yours?
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