In Dragon’s Dogma for the PS3 and Xbox 360, there is a dodge roll move in the game, however it is only for certain vocations, and it has to be unlocked.
For example, if you reach level 5 as a Strider, look at the core skills and you should have access to a dodge roll. Note that you can only perform the Dodge Roll with daggers in hand.
The default command should be RT+A on Xbox 360, or R1+X on PS3.
