The Autobots robbed me of my victory, but they have not seen the last of Megatron!

9 seconds sound clip from The Transformers (1984) - Transport to Oblivion TV Series.

You can hear this line at 00:21:20 in the DVD version of the movie.

Quote context

[...]

- Thanks, Bumblebee!

- This is the happiest day of my life!

- Megatron fell into his own space bridge!

- He's lost forever!

- I wish I could believe that.

- Megatron. What happened?

- The Autobots robbed me of my victory, but they have not seen the last of Megatron!

- I shall be avenged!

[...]