Have you beaten Ifrit with nobody having sentinel in your party?

[Belial]

With the upcoming class reform, it seems that sentinel will be a class/job exclusive ability/trait that won't be readily available to other class/job.

I wonder how is it possible to ever win the Ifrit fight without this wonderful ability. Has anyone who beat Ifrit with nobody in the party or just the tank having the sentinel ability?

From all the personal experiences, guides and video clips available, I have yet to seen anybody beating Ifrit without Sentinel. Have you? If you have, would you share how?

The purpose of sentinel is to have less dps on the spikes for Hellfire, and more output on Ifrit himself, just making the fight shorter. You can compensate for no one having sentinel by dropping additional spikes during this phase. It'll likely extend your time in the instance, but won't require having the ability on macro.