Round 1-Ramus refocuses, casts true seeing on himself (haste action), caster level 20
Round 2-Xarindel Refocuses, Ramus casts True Seeing Velience (caster level 20) and if possible, attempts to Greater Dispel (target) in the very middle of the darkness if possible (dispel check 1d20+22).
Round 3-Xarindel casts Melee Manager (caster level 23rd) on Velience and then Arkin (Magic Manager), Ramus attempts to throw 2 more Greater dispels in the very center of the darkness if possible (dispel check 1d20+22).
Round 4-Xarindel waits, Ramus casts a Wall of Iron spell inbetween Traal and the creature they're facing if possible-at whatever size seems appropriate to block the creature from Traal.
Round 5-Xarindel readies an action to hurl as many magic missiles with magic manager as possible at the opposing spellcaster if he is revealed by the darkness being dispelled (hopefully), Ramus readies an action to counterspell the opposing spellcaster (although if the other attacker casts a spell, he has the right to counterspell with his Reactive Counterspell feat).