K-2SO: There's a problem on the horizon. There is no horizon.
Chirrut Îmwe: I'm one with the Force, and the Force is with me.
K-2SO: There were a lot of explosions for two people blending in.
Cassian Andor: Make ten men feel like a hundred.
K-2SO: The captain says you're a friend. I will not kill you.
Jyn Erso: Thanks.
Baze Malbus: Good luck!
Chirrut Îmwe: I don't need luck, I have you.
K-2SO: Your behavior, Jyn Erso, is continually unexpected.
K-2SO: I've got a bad feeling abo...
Cassian Andor: K!
Jyn Erso: Quiet.
Jyn Erso: We have hope. Rebellions are built on hope.
Darth Vader: Be careful not to choke on your aspirations, Director.
Answer: Princess Leia is not being chased by Vader's ship until after the events of this movie. The entire fleet heads off to Scarif, and she picks up C3PO and R2 off-camera. At the battle on Scarif, we see the mothership get boarded by Darth Vader, and then we see the smaller ship make their escape. That ship contains Princess Leia and the two droids, which is subsequently being chased at the beginning of Episode IV.
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