Defeating Sorceress Edea in Galbadia Garden

This is the battle you will have to fight after acquiring GF Cerberus in Galbadia Garden.  You will also have to fight Seifer before you can get to Edea.

    Use the first few rounds to get yourself set up.  Cast Triple on someone who has some Haste, Protect, Shell and Regen spells (or cast your newly acquired GF Cerberus).  Have that person cast Haste, Protect, Shell and Regen on all your party.  Cast Triple on another member of your party, and have them assigned as the curer of your party.  They will cast a Cure or Cura or Curaga (whatever is needed) on each of your party members whenever necessary.  After defeating Seifer, attack Edea using your best GFs and physical attacks and Limit Breaks.  If you feel like risking it a little have your best Limit Break user on critical status (yellow HP) and everytime the battle menu of that party member opens, press the O button until the Limit Break shows up.  High powered spells in triplicate also work well.  Just keep an eye on your HP and if Edea casts Triple or Double on herself, cast Dispel on her.  If she is using way too much magic for your liking, cast Reflect on your party or cast GF Carbuncle, but be careful not to cast any curative magic after that, because it will reflect onto Edea.  You will have to use Items instead.