Here is how The Predacons attack and Yuna's rescue goes in The Journey Back to Life Part 2.
Princess Yuna: (open her eyes) Where am I?
Princess Luna: Yuna! My darling! (hugged her daughter)
Princess Yuna: Mama! Papa! I'm back!
Hiro: I thought we'd lost you!
Princess Yuna: At first you did.
Snowdrop: You're back!
Prince Isamu: (embraces her big sister)
Princess Celestia: Yuna, My darling niece!
Duck: Thank goodness!
Prince Indy and Princess Anna: (embraces their big cousin)
Princess Yuna: Aunt Celestia, Uncle Duck, Guys!
Tigatron: How is this possible?
Airazor: No idea. But, we're glad to have you back, Yuna.
Princess Yuna: Glad to be back, Airazor.
Just then, the Predacons invades Canterlot.
SpongeBob SquarePants: Yuna! You gotta come quick!
Princess Yuna: What's going on?
SpongeBob SquarePants: It's Megatron and the Predacons!
Plankton: They want to take over Canterlot!
Princess Yuna: (gets an idea) I have an idea.
Snowdrop: What is it, Yuna?
Princess Yuna: It's not going to be easy, But if we work together. We can stop the Predacons. You guys do what you must while I settle the score with Quickstrike.
Airazor: If you think it's a good plan, Yuna.
SpongeBob SquarePants: Let's take them down.