I will obey... Unicron.
5 seconds sound clip from the The Transformers: The Movie movie soundboard.
You can hear this line at 00:36:48 in the Blu-ray version of the movie.
Quote context
[...]
- Cybertron and all its moons belong to me!
(interference, Galvatron gasps)
- Autobots, prepare to board the shuttles.
- This new menace is more dangerous than all the Decepticons put together.
- Somehow we must destroy it before it devours Cybertron.
[...]