It wouldn't matter. They would have been considered combatants then, and are explicitly designated so under the Geneva Conventions now. Unless you're a medic or a chaplain, you cannot safely work for (or, really, even be "under the effective command of") Lebanese Hezbollah under the laws of armed combat.

To Kasey's point, the reciprocal is true, too! The laws of armed combat permit Hezbollah strikes on Israeli command and administrative staff.