the paladin protect need 20% haste for best rotation of spell, more haste are useless.
then if You play pvp you need 25%-30% versatility and 15-20% mastery, if you play pve you need 25%-30% mastery and 15-20% versatility.
For the crit you have 5% basic crit, the best in slot for pvp and pve are 5-10% critical rate