The defending player can try to use her Aegis to entirely block an incoming attack. In this case, roll Wits + Aegis Sphere against the difficulty of the attacker’s Gladius Sphere + 3. A successful roll means that the Gladius gets completely deflected that turn. The defender can either perform Multiple Actions (Mage 20, p. 388-389) in order to block an attack this way, use her entire turn as a blocking attempt, or employ Time 3 to give herself an extra action so that she can block the attack with her full dice pool.