For me if I'm tank I
Let another player make the first pull, preferably the other tank but it really doesn't matter

After clearing the first pack of required mobs,
I sprint which should be 20 seconds for not being in combat with the first group

I use provoke on the last pack of mobs, near the teleporter, then proc arms length

I unsheathed and run towards the teleporter, WAIT for one of more wave of hits from the enemies, and then click through

I pop a potion after I reach the other side to ensure I have an enmity lead for all mobs, in case a healer was generous enough to cast a regen on me

That way, no sacrifice is needed if everyone knows to just run on through

If you follow the above steps it should be possible with a DPS, even

If you're playing WHM the really easy way to go through is just simply cast HOLY on the pack near the teleporter lol

Any other tips for people that run prae regularly?