Rebels - S1E5 - "Rise of the Old Masters"

After the Ghost crew hears Senator Gall Trayvis's broadcast claiming that "one of the Republic's greatest peacekeepers, Jedi Master Luminara Unduli, is alive," Kanan says that "she was a great Jedi master, brave, compassionate, disciplined" and tells Ezra that "she'd made an excellent teacher for you."  From the moment she's introduced, Luminara is presented almost as the epitome of the Republic-era Jedi, but in this time period (the "dark times" of the Empire, as Obi-Wan describes it in A New Hope), she's more suited for this idealization than some other Jedi.  Luminara's name is related to lumen (gen. luminis), the Latin word for light, so in a way, she's the embodiment of the light side of the Force and acts as a symbol of the old Jedi order.

Rebels - S1E5 - "Rise of the Old Masters"

0:23 - Kanan (to Ezra):  "Do or do not; there is no try."  Yoda says this to Luke in The Empire Strikes Back [1:09:29].  In this episode, Kanan acknowledges the saying's provinance:  "Actually, that one always confused me, too, but Master Yoda sure used to say it a lot."

2:42 - Ezra (as Kanan pulls him through the air using the Force):  "What the?"  In Attack of the Clones, an alien on Coruscant makes this same exclamation as he sees Obi-Wan flying through traffic while hanging from a droid [15:08]; Han Solo says it in A New Hope after emerging from hyperspace into a meteor shower [1:03:15]; and in Return of the Jedi, a scout trooper says this after being hit by Wicket [1:05:38].

7:29 - Hera (to the rest of the rebels):  "Good luck."  In The Empire Strikes Back, an unidentified Rebel pilot wishes Luke good luck [36:02] and Luke wishes Lando good luck [2:00:09], and in Return of the Jedi, Han and Lando wish each other good luck [Han to Lando at 50:33 and Lando to Han at 52:21].

8:22 - Kanan (to Ezra, after he loudly runs into the door):  "You're lucky every stormtrooper in the prison doesn't know we're here."  Luke makes a similar complaint to Han Solo in A New Hope:  "You know, between his [Chewbacca's] howling and your blasting everything in sight, it's a wonder the whole station doesn't know we're here" [1:08:56].

13:30 - Ezra (on his comlink):  "Spector Three, come in; it's 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].

15:32 - Stormtrooper (to other stormtroopers):  "Hold your fire!"  Upon seeing that the escape pod jettisoned from the Tantive IV has no life forms, an Imperial officer commands, "Hold your fire" in A New Hope [7:08], and Obi-Wan says it to Anakin when he tries to shoot the buzz droids off Obi-Wan's starfighter in Revenge of the Sith:  "Hold your fire!  You're not helping here!" [6:03]

20:23 - Kanan (to Ezra):  "What're you talkin' about?"  This line appears three times in A New Hope:  twice, C-3PO asks R2-D2, "What are you talking about?" [6:51 and 9:47], and later, in response to Luke's urge to rescue Leia, Han Solo asks, "What are you talkin' about?" [1:11:03].  In Attack of the Clones, Anakin also asks Padmé, "What are you talking about?" [1:43:07].