ribbon on ur acc to prevent most status effects

counter-attack materia
depending on how strong you are, either slash-all or 2x cut, slash-all if u can take out the weaker monsters in one hit, or 2x cut otherwise.
restore materia
time materia (haste is very handy)
choco-mog (if u can paralyze some of the stronger enemies it helps)
long-range materia that way you can recieve less damage but still deal the same as u usualy wud (obviously not necessary if u have a long range weapon)

that shud do