I really struggle beating ret and unholy comps and this is a problem I face in both 2's and 3's. I try as hard as I can to get a solid Divine Aegis up and full renews and shields but they eat through it all in seconds. It always goes the same way: Repent my partner, (which I dispel) open with an unholy frenzy into necrotic spam. Then either a HoJ or Strang which I trinket and then wings and zealotry and gargoyle and its GG. I usually rotate my cooldowns like this: I use my Tenacity trinket and start running. Once I heal unholy frenzy I try to fake an interrupt. I make sure my partner (usually a Fro mage or Rogue) is peeling hard and keeping full slows on both of them. Then once I hear unholy frenzy I pop PI and IF (together) and start spamming flash heal to get Necro off. A good pally uses HoJ here and which I would trink. Then when the pally starts to focus me with zealotry and wings I attempt to dispel wings as best I can and this is when I use Pain Sup. After pain sup I rocket jump, and Mass bubble, if Im with a mage he drops a ring on me and a rogue bombs me so they cant grip.
All of this happens in probably... 30 seconds.. I really want to know if anyone has a solid start to beat this damage or what their partners do to help.