When you get farther in the game you can use players with sheilds that have the sheild bash skill to continously defend yourself while at the same time dealing damage to the enemy every turn. I use this skill with two characters while the other use the power strike skill. The only downside to this tip is that you have to have high levels on the skills and have a high MP to repeatedly use this. I also target one enemy at a time. This may sound like it wont work but it does. It has in the past several places i've been to. Just thought this might help out a little. If it doesnt work feel free to leave what you think will work. I've only lost 6 times throughout the game with this combo of skills.