Will not pursue/ Running Away

[i2ic0chet]

Hi guys/gals. Just wanted to say that I am new to this site and I bought the original Munchkin for Christmas as a gift to myself. We played it the prior evening and immediately throughout the game a bunch of questions were popping in my mind. I'm glad I found this site.

My first question deals on the premise of Running Away. Here is a scenario that happened in my first game.

I kicked opened the door to a level 20 Plutonium Dragon. His passive description read "Will not pursue anyone of Level 5 or below" I was a measly level 2 with no reasonable amount to defeat the dragon.

Here is my question. Because of his passive description of not pursuing anyone below level 5, does that mean I can just run away without rolling a die or DO I still need to roll a 5 or better to run away? Thanks again for the soon to be clarification