Another UV for shield, Reflection. Reflection will allow you to reflect some of the damage back to the monster that deal the damage.
SRI = Shield Reflection Increase
SRI Low.
> 5% chance of reflect back the damage to the monster.
> 5% reflecting damage.
SRI Medium.
> 10% chance of reflect back the damage to the monster.
> 10% reflecting damage.
SRI High.
> 15% chance of reflecting back the damage to the monster.
> 15% reflecting damage.
SRI Very High.
> 20% chance of reflecting back the damage to the monster.
> 20% reflecting damage.
SRI Maximum.
> 25% chance of reflecting back the damage to the monster.
> 25% reflecting damage.
EDIT: Didn't see this was a shield UV. Woops.
There is no such thing as "very low" though.
~Sev