8:52 - Ezra: "Chop, this is a trap!" Admiral Ackbar says, "It's a trap!" in Return of the Jedi [1:35:03], and Leia says it twice in The Empire Strikes Back [1:39:50].
11:39 - Chopper deliberates between going to find a settlement or following Ezra across the desert, during which his dome rotates between his two options, which is similar to what R2-D2 does in A New Hope, evidently trying to decide whether to go his own way or stay with C-3PO [10:07].
12:09 - Ezra (walking through a sandstorm): "Don't worry, Chop! It can't be much farther!" "Don't worry" also appears in Attack of the Clones (Anakin tells Padmé, "Don't worry; I've given up trying to argue with you" [1:36:02]), Revenge of the Sith (C-3PO tells Padmé, "Don't worry; I'm sure he'll be alright," referring to Anakin [1:24:00), A New Hope (Obi-Wan tells R2-D2, "Oh, don't worry; he'll be alright," referring to Luke [30:17]; Han tells Chewbacca, "Don't worry, Chewie; I think I know what he [Luke] has in mind" [1:12:12]; and Han tells Leia, "Don't worry; she'll hold together," referring to the Millennium Falcon [1:34:57]), The Empire Strikes Back (C-3PO tells R2, "Don't worry about Master Luke; I'm sure he'll be alright" [12:45], and Han tells Leia, "Don't worry" [1:20:04]), and Return of the Jedi (Lando, referring to Han, tells Nien Nunb, "Don't worry; my friend's down there; he'll have that shield down on time" [1:27:18]).