You Can Use Channeling Divinity to Do Something Special Uh

You can use an ability called channel divinity, which you can only do a couple times or so per day. Starting at sixth level whenever you or a creature within 30 feet of you takes acid cold fire lightning or thunder damage You can use your reaction to grant resistance to the creature against that instance of the damage. If somebody gets hit with fire damage you can have that damage have as in cut in half Not take it on myself. That is in my spell List or is that totally separate from from your spells? It's just something you can do Um, it's it's situational, but if you ever in a situation where you guys are being surrounded by zombies You cast the spell and whatever