Hi guys, not sure if this was posted yet.
Here goes:
On the bridge before the encounter, you will notice several little blocks sticking out of the bridge (where it bends). Ranged dps and healers can stand there to avoid a lot of trouble (the fire doesnt hurt them there).
BUT, the problem is, the adds can chainpull people. Therefore, you must have a gateway on the block at the bend and in the bosszone itself. Then you must make it past the first phase, which is no problem. Then dispatch the adds quickly. Then the RDPS and healer can use the gateway to the spot on the bridge. Enjoy a stress-less second half of the encounter!
I will add a picture if this turns out to be too vague. Good luck!