Well,
- Retaliation (Sentinel) provides 5% damage per point (tripled if you’ve blocked in the last 5 seconds),
- Relentless gives +5% increased damage per point,
- Conviction gives 4% phys/fire damage per point,
- Prayer gives 7% per point if you’ve healed yourself or an ally recently (though it’s bugged & doesn’t proc if the heal would fully heal you) & you could combine that with Holy Symbol for a heal on block,
- Reverence of Duality gives 2% per point
- Light of Rahyeh gives 8% fire damage per point
- Redemption gives +7% per point if you have proc’d Penance recently (chance to receive bleeding when hit)
Plus there’s plenty on the Forge Guard:
- Fresh from the Forge adds flat phys & fire damage every 3 seconds
- Peltast gives increased throwing attack damage
- Prime Fighter gives strength & attunement
And Void Knight:
- Devouring Blade gives +10% damage if you’ve killed recently,
- Sorrow & Steel gives increased phys (& void) damage but probably not too useful for you if you’re converting to fire
- Umbral Attunement gives attunement & 4% damage per point,
- Void Bolts adds flat void throwing damage,
- Future Strikes is bonkers if you’re going Shield Throw as it gives up to 100% chance for every hit (Shield Throw’s initial hit plus Eruption) to proc an ailment that deals 50 void damage after 2 seconds & it’s at the same level as Devouring Orb which is awesome too.
Also, if you’re going block, you absolutely have to take Rallying Block on the Forge Guard tree, it gives 5 armour & protections (per point, up to 50) for 4 seconds per block.
I do like the ward (& life) on block from Holy Aura, I view them as a short-term protection that reduces the hp you loose on the next hit.