When I got to the level 54 samurai story instnace I died a couple times doing it...
Was -just- dying before the boss...


Then it popped up next time with ECHO POWER!

I was like...
No, I don't want your pity buff!


I right clicked it off, saw another buff I didn't know as well, right clicked that off.
Then got absolutely murdered by the first set of trash.

Oops, I was supposed to have that other buff...
Right! Just remove the echo buff this time.


I then managed to clear it with better use of my role abilities.
And no Echo.