You are NEVER required to fight in parties and especially the raids.

Please do not blow enemies out of the group for 'more damage'. The only time pushing enemies will save ya'll from damage is if it's stop the enemy from casting something like Mist, or to subsequently cast repose to effectively put them out of the fight. The former is normally handled by the tank or DPS, or evade it entirely. You'll have to trust the party to do this, unless they've shown time and time again that they cannot interrupt or escape it. The latter is normally not needed.