Redprotect: How to allow lightning?

[CraftE_C]

Hi again, this time it's not about Luckperms. I'm making a lightning wand (with skript) and I need to know how to allow lightning to strike in a region without allowing fire to spread to other blocks. I can't figure out what flag this is.

 

Again, this is with the Redprotect plugin. (A plugin I can understand to a decent degree.)

[_Tarna_]

With the "fire" flag, you can Deny fire spread, fire and explosions damage for all blocks in a region. 

Here is the plugin's wiki. It shows all the flags and info about the plugin you can use. 

https://github.com/FabioZumbi12/RedProtect/wiki