How to get odin in Final Fantasy 13? ASAP 10 points best answer!!!?

I have read other posts that stated use war and peace but i don't have that option with hope and lightening. i Only last like .0003 seconds in battle. i set both as medics but it didn't raise the bar fast enough and of course the doom counter runs out. Any advice as to how i can go about this with out getting totally nailed by this guy? Thanks in advance!