Chapter 33. Twilight just destroys the attackers. At least until...
The Overseer Ethereal completely immobilises Twilight with two words.
That's followed by someone (confirmed to be Zhang in 34) sniping that Ethereal through a Battleship.
Mente Materia
Chapter two has Celestia and Luna fighting an alien attack on Equestria. The aliens never stood a chance.
In chapter four Matt's squad takes part in a training exercise to fight Shining Armor. Even with them using all their tricks, their opponent takes them apart with ease.
In chapter seven Matt almost singlehandedly repels an alien attack on Ponyville, including literally crushing spacecraft.
In chapter 20 Spike gives a "The Reason You Suck" Speech to Shirogane - a dragoness thousands of years old and so big her teeth alone are bigger than Spike - over her Fantastic Racism against Twilight and the ponies.
