Final Fantasy games are usually pretty easy and anything that's unreasonably difficult is something that's probably not going to be fun in the first place so I just skip it if possible.

Though I remember my first time playing the Lunarians' chapter in Final Fantasy IV: The After Years and when I got to Bahamut's cave, I was attacked from behind by a malboro and it killed me before I could get an action in. I was at full HP and MP, too. There was nothing I could do about it. It had nothing to do with my actions.