Thereby destroying Planet Druidia and saving Planet Spaceball.
6 seconds sound clip from the Spaceballs movie soundboard.
You can hear this line at 00:06:45 in the Blu-ray version of the movie.
Quote context
[...]
- There it is. Planet Druidia.
- And underneath the air shield, 10000 years of fresh air.
- We must get through that air shield.
- Thereby destroying Planet Druidia and saving Planet Spaceball.
- When will the Princess be married?
- Well, I hope it's a long ceremony, 'cause it's gonna be a short honeymoon.
[...]