Faithful don't really get much kills in PvP, it's really just about holding the node and keeping team mates alive.
For encounters I use: Bastion of Health, Astral Shield (always try to get this empowered) and Sunburst (I use this mainly for knocking people off nodes, or interrupting casting etc. I try not to set it off if other team mates have locked down opponents). If you have Gift of Haste from the Virtuous tree then divine sunburst may be useful for allies (though not sure if it is still bugged and grants enemies AP as well)
Dailies: Hallowed Ground or Anointed Army. Anointed is good to have when you are being stunlocked by HRs or CWs, or when your shield is down.
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For encounters I use: Bastion of Health, Astral Shield (always try to get this empowered) and Sunburst (I use this mainly for knocking people off nodes, or interrupting casting etc. I try not to set it off if other team mates have locked down opponents). If you have Gift of Haste from the Virtuous tree then divine sunburst may be useful for allies (though not sure if it is still bugged and grants enemies AP as well)
Dailies: Hallowed Ground or Anointed Army. Anointed is good to have when you are being stunlocked by HRs or CWs, or when your shield is down.