To be a healer (in 8v8 for example) you need 40+ Rejuv, 45+enhance, 18staff.
For solo, the specc I always go back to is:
45ench, 39staff, 23parry, 16rejuv. (This specc works great in a duo too)
For duo, smallman or possibly a peeler role in 8man you can go a hybrid specc with
45ench, 34staff, 34rejuv
The hybrid spec is great for zerg surfing, soloing, smallmaning. The more melee version is great for solo or smallmans.
There is also some out there that prefer a lower enhance (35/36) as it gives you wiggle room to raise staff or rejuv higher. IMO dropping enhance your the 30s biggest drawback is lowered heat resist, the Dex/quick, ABS and AF buff aren’t massive affected by this. I’d only do that for zerg surfing or smallmanning/soloing. 8v8 wants those resists.
I have heard of friars dropping ench to 37/38 for yellow resists... for this to work you would need cleric to throw you spec AF, and you still would be squishier with 5% less absorb. If you have high MoArcane that would aid this specc. But you would get Decent staff 34 for dmg & great peels, with 40/43 rejuv to cure NS.
these specs would Likely be discussed with your regular 8v8.
(I can see why parry is pointless for a PvE friar that is not taking damage and just assisting (& same goes for absorb/AF)).
The style review maybe coming up soon and i am hoping the 44staff style gets changed to a 2-part chain rather than 3; and therefore, becomes somewhat useful in RvR.
If this is the case i can see myself trying: 44staff 45ench, 16rejuv, 11parry.
Lastly friar gets spec conc based AF too. That said the mid 30s enhance self spec AF is still higher than yellow conc AF.