As a Frost Mage in Arenas you don´t realy need obscenes numbers of Resilience since you are the last one to be hit. People simply hate to focus on us because of our ways to scape. Of course they will kill us after a time, but the effort to do that is not worth it...your partner(s) will always look much more viable to kill than you (Block, Barrier, Nova, Blink, Frostbite, Pet's Nova, Cold Snap...).
That been said, what you need to do well on PvP is balance your stats. The Resilience on your Gladiator gear (I mean, with Wand and Staff/Main hand) and Vindicator is enogh for the resilience, you will get something near 400...wich is a realy nice number (in the gems, put +sta/dmg on the blue/red sockets and +crit/dmg on the yellow sockets that makes the bonus be worth it, if you realy think Sta/Res is necessary to put on a Socket, you can choose the +10/8 Res or res/sta on the yellow sockets). Then, you just need to get near 10k HP and something like 850+ spl dmg. Actualy, I'm switching some Stamina for Spl Dmg 'cause people realy don´t kill us first...or we are CCed/mana drained, or we are just left behind (bad choice if they do that).
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