I'm not quite sure if this answers your question, but the Catholic ( & possibly other Christian religions) prayer To the Guardian Angel is this:
Angel sent by God to guide me,
be my light and walk beside me,
be my guardian and protect me,
in the paths of life direct me.
Amen
Again I'm not sue if that answers your question, but I got that prayer word-for-word from my prayer book. I go to a Catholic school, & we have a small paperback prayer book I got this from. Hope this answers your question~!!^^