LEAPFROG'S PROFILE

So, I'm wondering, in my extremely limited knowledge of skills and eventing, whether it's possible to make a protective spell that blocks a certain amount of HP damage to an ally and leaves them to take the excess damage.

For example, take Terrence. Terrence has 100 HP. His teammate Maria, with whom he is quite amicable, targets him with a shield spell that will absorb 25 HP of future damage.

A Dancing Goblin flails at Terrence, doing 38 damage. The shield absorbs 25 of that damage and the remaining 13 is dealt to Terrence, leaving him with 87 HP. Terrence is no longer shielded but he is very pleased to have avoided the brunt of the damage and will likely give Maria an effusive thank you.

I'll stop before I go into a blow by blow account of the entire battle. But is this doable with the standard database + eventing or do I need to reach down deep and find some heretofore nonexistent scripting prowess? Please advise.