There are some mobs who should be taken down with priority and who require some precausions.
Sunwell Protector.Casts Chain Fel-lightning-Shadow magic spell.affects the whole raid,resistable.Priests must cast Shadow Protection on the raid.Pallys should switch to Shadow Resistance aura.
Dps and tanks must use all available stun skills to prevent casting and also try to avoid stun stacking.Silencing skills and spells are nice too.
Sunblade Dragonhawk.Casts Flame Breath: 2500 Fire Damage. Frontal Cone AOE.Dps should try atacking it from behind to avoid taking dmg.
Sunblade Dawn Priest.They heal the other mobs so it`s very important if they`re taken down fast.
The other mobs don`t need so much special attention as they use mainly 1 target spells and skills or healable aoe and aren`t a serious threat.