From Dragalia Lost Wiki
Ranged Resistance causes the boss to take 90% reduced damage from all attacks by Ranged Adventurers (Bow/Wand/Staff/Manacaster). This includes skills and dragon transformation.
- Only the weapon type of the adventurer is considered, not how close to or how far from the enemy they actually are. For instance, a Close-Range Manacaster would still be impacted since they are a Manacaster.
- Similarly, the attacking distance of the dragon is not considered. A melee unit that uses Cupid (who shoots arrows) will still ignore Ranged Resistance, and a ranged unit that uses Corsaint Phoenix (who attacks up close) will still be affected by Ranged Resistance.
- This is primarily used by Ghost type enemies in Void Battles, as well as Void Nidhogg.