we had the 1 or 2 RDM which were /blm and ES Gravity the mob then just kite/nuke.
its harder with just one RDM since only got one ES gravity^^ but with COR can maybe reset ES.
BLM's and SCH (the SCH only has SCH WHM and some DD jobs 75) are /nin.
Its easy to outrun with casting spells. In the end most of the time i just stood there and didnt even kited my Mob once grav weared off (i had Divine Magic rune so no real AOE to outrun like on Elemental rune) Just Blinktanked. But staying there can be dangerous ;) he can some move (forgot the name) which can eat up to 3 shadows i think and this move will most likly oneshot you when not wnough shadows up.
We had various of jobselections (mainly RDM + RDM/COR/BRD in some rotations) once with BRD and RDM didnt kited that much cause he hit VERY slow with Slow and elegy. Dont know how good they sticked, but were on quite often.
Think that run we even had BRD COR RDM as support jobs.
BLM keeped stuning as often as possible (aoe's and to help the kiting BLM) and when we needed a little break a BLM can still ES Bind the mob.
edit: yea Bind mainly (not ES sleep) cause we doted it full time
was allways easy even when 1 BLM got oneshotted between w