Evs into Def and hp or sp Def Or the other way around doesn't matter
Wild Charge Return Sucker Punch U turn
I actually use an Assault Vest Furfrou myself, though the general idea is a bit different.
Furfrou@Assault Vest Jolly nature Fur Coat 252 Atk/252 Spd/4 HP ~Retaliate ~U-turn ~Sucker Punch ~Wild Charge
I bring it in whenever another one of my Pokémon faints for a supercharged Retaliate. Between the boost and STAB, it packs a punch. U-turn lets Furfrou switch out until it's needed again, and in case of emergency, Sucker Punch and Wild Charge provide extra coverage. And Sucker Punch is some damn useful priority. Saved my ass against a Mega Medicham once, in fact. And even with minimal defensive EVing, between Fur Coat and Assault Vest, not to mention its naturally respectable Special Defense, holy crap, can this thing take hits!
My fanfic: http://www.fanfiction.net/s/9247960/1/404-Error My Shiny Pokemon (not for trade): http://i.imgur.com/1utdapU.png