Instructions
Press the "Y" button to perform a block maneuver when an arrow comes close. You must press the button before the arrow hits to reduce any damage.
Hold the "Y" button to continue using the block action. Your character can still maneuver while blocking by using the Left Analog Stick. This causes him to perform a rolling action that blocks attacks while he moves.
Cast a Shield spell to block arrows. Assign the Shield spell to one of your magic buttons and then hold down the Left Trigger plus that button to cast the spell. Each time an arrow hits you with the Shield spell on it will reduce your mana points instead of your health points.