I know when to use LB, thanks

[Cyrus-Wallace]

I have had DF parties where the overall weapon damage was not high enough to skip the last phase of this fight. I have found in these circumstances it is better to save it for the big bomb. It can't always be skipped.

In those cases... you're right and I forgot to mention it. It's important to evaluate the DPS before attempting to skip phases in a fight.