I want to offer advise to anyone if they need help with the Orgre at the Macalina Temple with the Guado.
To start off with you must have these at very high Stats: Wakka, Lulu and Rikku. Wakka must know Sleep Attack. And Lulu must know her 2nd leaval magic. The reason of having Rikku is so she can Steal the Auto Poition from the Guado and Use her iteams.
Have Wakka use Sleep Attack on the Orgre. Wakka must be switched out so then when it wakes up the charactor who has their turn can then switch so Wakka can put it back to sleep without anyone being hurt. When the Orgre is asleep DO NOT attack it. Only use Magic and Rikkus iteams. Next finish off the Guado. Have Auron attack and Rikku steal the iteams. When they are done have Yuna cure Berserk, if its been put on. Next have Wakka put it to sleep and Lulu use Magic. Heal if you must. Repeat the progress untill he has around 6,000 hp left. Have Yuna summon Shiva and use Heavy Strike. It does around 1,000 to 2,000 attack. Keep attacking then Cungratulations!!!You defeated him!
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Adopted Charactor:Yunie! FFX
Adopted Pet:The Aeon Shiva
Weapon: Yuna's Rod Of Water