OK it's only a bit similar, but still! It's similar!
Halo, opening cutscene on two betrayals:
CORTANA: I've spent the last 12 hours cooped up in here, watching you toady about, helping that thing get set to slit our throats!
[...]
Do you have any idea what that bastard almost made you do?!
MASTER CHIEF: Yes... [save humanity]
Marathon, terminal 1 on blaspheme quarantine:
DURANDAL: I was watching what Leela was having you do: 'save the ship, save humanity!' And just what or who are you saving them
from? And to what end?