I seem to have found it.
4 seconds sound clip from the Star Wars: Episode IV - A New Hope (1977) movie soundboard.
You can hear this line at 00:35:04 in the Blu-ray version of the movie.
Quote context
[...]
- Vader was seduced by the dark side of the Force.
(R2-D2 Beep Blip Blip Beep) (2)
- Now let's see if we can't figure out what you are, my little friend, and where you come from.
- I saw part of a message he was
- I regret that I am unable to present my father's request to you in person.
- But my ship has fallen under attack, and I am afraid my mission to bring you to Alderaan has failed.
- You must see this droid safely delivered to him on Alderaan.
[...]
Sound clips of famous quotes and sound effects sampled from Star Wars: Episode IV - A New Hope) that you can use as ringtones. All waveform sound bites are in wav and mp3 format.
Actors: Mark Hamill (Luke Skywalker), Harrison Ford (Han Solo), Darth Vader (James Earl Jones), Carrie Fisher (Princess Leia), Alec Guinness (Obi-Wan Kenobi), Anthony Daniels (C-3PO)
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