I find chants very relaxing. And, it has nothing to do with a specific religion.

P.S. Its weird, but the Orthodox, generally speaking, "hate" Catholics more than they hate Muslims. In fact, a Muslim was /is the referee to the Church of the Holy Sepulchre https://www.reuters.com/article/us-religion-jerusalem-church... Might have to do with the split and a tiny thing like https://en.wikipedia.org/wiki/Sack_of_Constantinople