Ah. In that case, I would say that shielding is a stop-gap measure. It's not great, but if it works for you then it's good enough.
Yes, a shield can be made with energy and intent together.
While psions tend to favor the simple Bubble Shield, there is a ritual that might be right up your alley, called The Star Ruby. It's basically The Lesser Banishing Ritual of the Pentagram with the Judeo-Christian names replaced by Kemetic/Thelemic ones. You can YouTube it if this doesn't lay it out clearly enough: http://www.sacred-texts.com/oto/lib25.htm
The Cleansing Rite of the Ankh is another good one:
(I don't know why Kemeticists are so good at writing these spells. I haven't even gotten into Kemeticism and just replacing the names and words with my own elements work really well for me.)
The thing is, I don't really know what your situation or inner world is like. Usually, I would recommend examining what messages you have internalized from your upbringing and environment, that is harmonizing with the prayers. Process that, and you'll become the sort of person that prayer energy gets directed towards and then goes NOPE NEVER MIND because your energy body and aura are naturally so incompatible with it with or without a shield. If you're in an oppressive environment, however, (and it sounds like you are in one) then it can be difficult to do that self-examination without making it worse and losing your balance, in which case, yes, shield up--make your safe space to find yourself--just do what you have to do, and your instincts are your best guide for what exactly that would be, definitely a better guide than I can be.
I hope this helps, anyway!