Translation?

I wonder if someone could give me a translation of the characters carved into the back of a carved bone Kuan Yin amulet I have.






Ideally, what I'd love to have would be a transliteration, a literal translation, and a more fluent/idiomatic/contextualized one, but I'll be happy with whatever people can provide.

I could probably look up the characters myself, but I've done enough to know that there are shades of meaning I absolutely would not get, even for a literal translation, and I wouldn't know which of the readings (pronunciations) of the character would be appropriate, and I wouldn't get a sense of the whole. So if anyone can help me out with this, I'd be interested and grateful.

Thanks.