Evrae Battle
I don't follow anyone's instruction. I have my own strategy unless my strategies aren't working.
Since our beloved summoner is not here during the fight, things are a bit toughie...except in my case though.
I didn't used a Poison Ward armors in here...and Al Bhed Potions come in handy in here. If you want, use Poison Ward/Proof at your own pleasure. It's up to you, loves.
At the start, have Tidus or Rikku ask Cid to pull back. Have Wakka and Lulu do the damaging while Tidus casts Haste and use Cheer. This may be your chance to cast Haste on other members as well.
When it's HP is down to 10 000, it'll cast Haste on itself. Don't bother casting Slow on it for it'll use Haste over and over...thus, you're wasting your turn and MP. Also, don't bother to pull back, it'll just come closer over and over unless you want to die.
Have your strongest attacker attack and have Rikku mix elemental items to do some damage. Or if you have Underdog's Secret, combine it to deal serious damage on it. Adios!
Underdog's Secret can be obtained from Rin if you got all of 26 Al Bhed primers in here.