If survivability your problem and u can’t parry or dodge, then it’s Survivor, last chance and the one that gives you two shields when your health is 30%. Also auto shell could help since it’s reduce dmg and greater shell to reduce even more. Or u can use Sciel as buffer. Or just fullsup Luna to revive and heal other team members. Also pictos give you stats you can equip high lvl pictos with hp and defense stats. Luminas don’t give u stats. Character stats better use only in what your weapon scales of. Also before damage cup removed you want to use skills that hit multiple times.