You are looking for Children of the Gods by K. The scene is in chapter 5. The story is rated MA so no YIM's.
Children of the Gods by K

Kagome goes home after making her wish only to find she doesn't age. How will she get back and who will she be reunited with? *Nominated in two categories of the 4th quarter 2010 awards! Best Canon and Best Action/Adventure!*
Rating: MA

Hi, looking for a story and unfortunately I only remember one scene

I remember it being a very strong and trained Kagome. She is in some kind of mission/journey with shippo which I believe is grown up and also trained. Maybe they are going to the west? Before resting I remember Kag doing like a web of reiki to make sure they are safe before call it a night. Sess being aware of her presence, and he is not alone by they way, sends his scouts ahead of him in a way to test Kagome... Kagome defeats them “easily” but shippo kinda gets a little bit separated and when Kagome is done and finds him he is barely alive... that’s all I remember. I am not sure if they were sess scouts that hurt him or “the enemy” of the story.

Any help is appreciated!!

That sounds like Stay Clever, Little Fox by Kate
dokuga.com/fanfiction/story/10624/1

You don’t know How grateful I am for your response insomniac_amy! That’s exactly it! Thank you! Thank you!

I appreciate your help but insomniac amy hit the nail... than you!

You are very welcome. That story is one of my favorites.