Some Powers let you Defend a target land, which reduces Damage done by Invaders to the land and/or Dahan.
“Defend 2” means “Whenever Invaders deal Damage in target land this turn, reduce by 2 the Damage done to the land and to Dahan.”
If multiple Defend effects are used in one land, they add together.
Defend effects last for the entire turn.
Each player has optional Markers you can use to help you remember that a land is Defended this turn.