It's just too bad that SA doesn't follow simple "avoidance" mechanics. Realistically (and I know this is a fantasy game and all), what can you do to help someone not get hit by something?
1.) Take the hit yourself. I'd rather not!
2.) You could parry the attack (at least my loose understanding is parry would be to divert an attack using your weapon).
3.) Block the attack with your shield. I believe this is what the purpose of this ability really was. I think the fact that things like parry%/reposte%/dodge% helps with this is probably a bug an oversited bug and nothing else.
Anything else would be just ridiculous frankly. I mean how affective would a bodyguard be if he dodged a bullet for their charge (I'd have said the president, but I'm sure the response for that wouldn't be quite what I was wanting

)
I mean really woohoo I dodged the attack...wait, they were aiming for you and I dodged it, which means it still hit you LOL