I'm just gonna jump in here and have a go.

I surround you with strength in each dimension-Increases your strength
Though I'm not offensive, do pay attention!-Not a spell that causes damage
I'll help you, if properly employed-Self explanatory really
Neglect me? Expect to be destroyed.-I hope this bit fits in with my guess.
So bring out your strong side and show me it-Increase your strength/Physical attacks
Your opponent's face will turn blue in a bit!-and i'm not sure how this fits in.

So my guess is either gonna be the Berserk spell or the Mad rush ability from Ifrit.