Lightning Rod - Defense For Lightning Spell

Whenever you have a ton of resources (especially dark elixir), people will attack you and use multiple lightning spells. My base is positioned so that the loot storage are in the middle so they are the hardest for people to get to. People will attack me and just zap a bunch of my loot that is located in the center of my base. I'd like to be able to put up a lightning rod in the middle of my loot area so that it will block lightning spells for the area. That way people can't just come in and use 3 lightning spells to take 1000 dark elixir (which takes me all day to save up).

That sort of defeats the purpose of lightning. It's simpler to make the storage resistant to lightning damage anyways