I have a tremendous respect and understanding for patients when they engage in spiritual practice and I encourage it if the cues, as you've mentioned, are there. Spirituality, religion, faith, prayer etc is extremely healthy and healing for people. I am a spiritual person, but also an atheist.
There was a funny situation the other day when a preacher was standing over a young girl with an obvious fracture and impressive deformity of her arm. He was praying for her with the family, asking God to guide the doctors to provide competent care, see her through this tough time, and help her find relief from her pain. I was glad to see him there helping me and the docs guide this nice family through this stressful time in their lives. It was kind of humorous though about the pain relief. I was standing there with my hands together, quietly respectful, with 4mg of morphine and zofran in hand. I was thinking "Hello.... preacher dude, need to administer God's pain relief... can we speed this along LOL".
Thanks for all y'alls posts.