There is something special about you. You are very ugly, majestic, holy, crazed, or otherwise special, and people tend to leave you alone because of it. Great for a Master Villain and blue-blooded nobles.
As long as you remain passive (neither attacking nor running away, though using Intimidation, Leadership, or Seduction is OK), you will not get attacked. This works as long as the situation warrants it; if your goons have been defeated and your Master Plan revealed, you may have to follow the gentleman escorting you to prison. But he will be polite as longas your Aura holds.
In dramatically appropriate situations it is possible to try and penetrate your Aura, the opponent must make an opposed Intimidation rolls as a 3-shot action. You may defend against this.