Holly nodded and bounced around before suddenly using bite

Lucius was surprised by the agility of the Eevee, but soon caught up to pace. He tried using a Confuse Ray, but missed. His eyes glinted, and his Omega Sign grew brighter. He started to prepare for a Fire Blast.

Holly jumped around before using quick attack, she needed the Exp and knew she wouldn't quit

Lucius' Omega grew blindingly bright for a second, and then he used Flame Burst, setting some of the nearby trees on fire. He quickly used Extrasensory to bring down the trees and extinguish the fire, before turning back to his opponent.

Holly was blinking and confused, she looked around

Lucius stared at her, confused why she was looking around. A glint in his eyes, he realized he could use this to his advantage. He quickly used Extrasensory to bring down a tree branch behind him, swiftly climbing up the tree branch and hiding in the trees.

Holly slowly slipped out of confusion and looked around, her ears twitching once more before she backed away slightly

Lucius used this to his advantage, and quickly hopped out of the trees behind her before using a Quick Attack.

Holly yelped and slowly picked herself up, she narrowed her eyes and suddenly vanished before appearing behind him and using head butt

Lucius flinched in surprise, and looked back after a second. He used another Confuse Ray on the Eevee, this time hitting (I'll leave it up to you as to whether or not it confuses her).