This is how The Mane Seven vs. Midnight (Black Twilight) goes in My Little Pony: Equestria Girls: Rainbow Rocks.
[We see Twilight Sparkle, Rainbow Dash (EG), Pinkie Pie (EG), Rarity (EG), Applejack (EG), Fluttershy (EG), and Sunset Shimmer stare at Midnight]
Midnight: You seven are pathetically predictable. Like moths to the flame. [to Twilight] What about my generous proposal? Are you in or are you out?
Twilight Sparkle: I don't think that's much of a choice.
Midnight: Wrong answer!
[Midnight attacks the Rainbooms]
Midnight: You need to learn more about power.
Twilight Sparkle: That's what you think.
[Midnight senses Twilight using her anger]
Midnight: That's it, Princess Twilight. Use your anger. Use your pain. Let it fill you. Fuel you.
Twilight Sparkle: Not really.
Rainbow Dash (EG): Our anger turns the magic of friendship into something you can feed on.
Pinkie Pie (EG): We learned that when we encountered the Dazzlings.
Rarity (EG): They weren't merely as dangerous as you are.
Applejack (EG): Which is why you're goin' down.
Fluttershy (EG): Your evil ends here.
Sunset Shimmer: And it ends now!
[Twilight uses her magic to make Midnight fall on his knees. Twilight then approaches Midnight.]
Midnight: Your magic of friendship is not real.
Twilight Sparkle: Thats what you think.
[Before Twilight can use her magic to kill Midnight, Sunset blocks her attack]
Sunset Shimmer: We need him alive for the finals. Let's go.
[The Rainbooms run off while Midnight recovers. As Midnight gets up, he looks around and sees the Rainbooms have disappeared]
Midnight: No one says no to me!