Bard and BLM have really good spike damage/aggro. So you'll have to make the most of your tool as much as they have to.
If they are doing AOE then you'll be stuck Flashing quite a bit. Try to split up your RoH Combo over a couple mobs as Savage Blade generates decent Enmity as well.
For Spike Enmity I usually FoF, Shield Lob, run into the position where the mobs will group, SoC and Flash, Spirits, Flash and then rotate RoH with priority on mobs close to eating a DD.