lets go by steps :
1) check if there is someone hunting then go back at stairs , if someone is hunting wait they kill the lure then go.
2) if there no one hunting the easyer way is Mark the entrace of the cave on your mini map then click on it let the mage go first then the ek, mage use mana shield, ek use set with protection to earth and fire a good thing is use a might ring while runing could be of help, the mage run with utamo and might ring, if the mage get trapped the ek still can exeta and run, in case the ek get trapped summon the thunder giant to get the mobs from ek and let him free, you can even sumon thunder giant at stairs if you want so monsters will target him instead of you, another good tip is you can use
to leave without risk of running back since your thundergiant should be in coldown, if you dont have the cube yet in wiki you can find the quest of "supreme cube", it is a big help to leave from hard places, hope it helped =)