[Phoenix Flame]

Level in the Dark Ruins. o_o; There's a spring where you can restore your party's Hp/Mp right before Dhoulmagus. And there's trolls around there that give pretty good experience.

As far as the fight goes. Just make sure you keep Angelo using Healus.
Hero and Yangus should only psych up to about 20 - cause of his beam attack that knocks down your tention o_o; Just make sure that you keep everyone's stamina up every time he uses that. He uses a lot of fire/ice spells - so I suppose that if you have insulate with Jess that should help quite a bit.

In the first battle - take out the right Dhoulmagus first, then the left, before focusing your attacks on the center (he has the most HP.)

The second form's attacks are stronger, so watch your HP! Just keep psyching up to 20 and thwacking him with your strongest attacks...he should fall when you have a party in the 30-35 level range. Good luck!