Just to expand on what Taika is saying here.
Two regens and a fairy is all it takes to heal the entire first phase, also note that one of those is just before the pull and this is with a tank in DPS stance as well.
If you aren't doing some DPS here, you are literally dead weight and a detriment to your team at this point.
God forbid people demonstrate that they have the slightest idea what they are going on about eh? This thread would be a lot more useful (and like a fraction of the length) if you'd grow a backbone at some point. =(