Listen to the sound clip Sorry friend, it looks like you've wandered into a restricted area. You've got to leave now. from Arvena Thelas Sounds: The Elder Scrolls IV - Oblivion:

Sorry friend, it looks like you've wandered into a restricted area. You've got to leave now.

This sound is from Arvena Thelas Sounds: The Elder Scrolls IV - Oblivion

Arvena Thelas Soundboard from The Elder Scrolls IV: Oblivion. Contains over 275 sounds including complaining about Rats and Lions.