When an effect saves 2 Dahan from destruction, does it protect them from multiple instances of destruction in a single action? (e.g., from "Explosive Eruption" dealing Damage to Dahan multiple times)

When an effect saves 2 Dahan from destruction, does it protect them from multiple instances of destruction in a single action? (e.g., from "Explosive Eruption" dealing Damage to Dahan multiple times)

Save 2 Dahan total from the action, whether they are destroyed in one instruction or two. Once a piece has been saved, it's immune to any further direct harm from that action.
Read "The next time Dahan would be destroyed" ("Birds Cry Warning," "Offer Passage Between Worlds") as "During the next action that would destroy Dahan," and read "each time Dahan would be destroyed" ("Share Secrets of Survival") as "During each action that would destroy Dahan."