There’s a sci-fi book series called Hyperion where one of the main fucuses of the far-future theocratic government is to search for signs and symbolism of Jesus on other planets. Since if you find an alien species worshipping Jesus or using cross symbolism, you’ve all but proven that God exists.
If you like old school scifi you’ll probably like it. It’s a grand opera. Prolog to the first book is online here:
https://read.amazon.com/sample/B004G60EHS?f=1&l=en_US&r=eec1d4a1&rid=348SM72J0X8RWTFKS1BG&sid=136-6887572-5455735&cid=ANAROXL46XMJT