There can be only one response to this... this, DEFILEMENT of the souls of our ancestors!
<name>, if you would aid us to restore the souls of our honored dead to their rightful place, go back to Razaan's Landing.
Go back up there and kill the razaani until their leader, Nexus-Prince Razaan shows his cowardly face. Kill him and get those souls back, and then give them over to Spiritcaller Dohgar!
Details
There's a circular gate standing in the middle of Razaan's Landing. You will need to kill many ethereals to power up the gate (approximately 12-15). You should be able to tell how close the gate is to summoning Razaan by how active the energy is around the gate.
Eventually the gate will open and Nexus-Prince Razaan will step out, yelling about his operations stopping. He will slowly walk from the gate to the edge of the camp. He will then turn around and walk back. If he reaches the gate, he will despawn and you will need to kill more ethereals to resummon.
Once Razaan is dead, a floating cube will appear. Right-click on the cube to get the [Collection of Souls]. The souls are not on Razaan's corpse.
Reward
You will be allowed to choose one of the following: