5:09 - Count Dooku (to Clovis, after he refuses to raise interest rates on the Republic's loans): "Oh, but you can, and you will, or everything that you fought so hard for will be destroyed." There's some similarity here with what Queen Amidala tells Boss Nass in The Phantom Menace: "The Trade Federation has destroyed all that we have worked so hard to build" [1:41:02].
6:07 - Senator Meena Tills: "And what of the Separatists?" There are similarly constructed questions in Revenge of the Sith (Obi-Wan asks Yoda, "And what of the boy?" [2:09:21]), A New Hope (General Tagge asks Tarkin, "And what of the rebellion?" [37:42]) and Return of the Jedi (Vader asks Palpatine, "What of the reports of the rebel fleet massing near Sullust?" [53:57]).
7:12 - Count Dooku (to a tactical droid): "You may begin your attack." This is somewhat similar to what General Veers tells Darth Vader in The Empire Strikes Back: "You may start your landing" [28:17].
7:59 - Commander Thorn (to Padmé): "We can't get to you." In The Empire Strikes Back, Han Solo also says this after a passage in Echo Base collapses during the Imperial assault: "Transport, this is Solo. Better take off; I can't get to ya; I'll get her [Leia] out on the Falcon" [33:53].
10:55 - Count Dooku (to Padmé): "Either you're with us or you're against us." While the specific words are different, this is the same sentiment that Anakin expresses (to Obi-Wan) in Revenge of the Sith: "If you're not with me, then you're my enemy" [1:47:31]. As Obi-Wan replies, "Only a Sith deals in absolutes."
11:19 - Clovis (to Dooku): "This was not part of the deal." This is somewhat similar to what Lando tells Vader in The Empire Strikes Back: "That was never a condition of our agreement nor was giving Han to this bounty hunter" [1:31:10].
11:36 - Clovis (to Padmé, trying to explain his situation): "There was nothing I could do." Two similar lines occur in A New Hope. When Luke returns to Obi-Wan after finding his aunt and uncle murdered, Obi-Wan says, "There's nothing you could have done, Luke, had you been there" [42:02], and after Vader cuts down Obi-Wan, Leia tells Luke, "There wasn't anything you could have done" [1:33:52].
12:16 - Senator Mot-Not Rab: "We are doomed!" C-3PO says "We're doomed" twice (both times to R2) in A New Hope [3:04, 16:02], once (to Han, Leia, and Chewbacca) in The Empire Strikes Back [1:00:38], and once (to R2) in Return of the Jedi [10:03].
12:27 - Palpatine (to the Senate): "We shall commence a mercy mission to Scipio, to be led by General Anakin Skywalker." Darth Vader also uses the phrase "mercy mission" in A New Hope when he says to Leia, "You weren't on any mercy mission this time" [7:47].
12:40 - In his address to the Senate, Palpatine briefly raises both arms. While the framing is a bit different, he also does this in Revenge of the Sith [1:36:07]:
16:09 - Tactical droid (after Dooku commands him to leave behind the forces still on Scipio): "As you wish, Count Dooku." The phrase "As you wish" occurs a number of times in the original trilogy: in A New Hope, Vader says it after Tarkin asks him to release General Motti from his Force choke [38:45]; in The Empire Strikes Back, Boba Fett says it after Vader warns the bounty hunters against disintegrations [1:06:22]; in Return of the Jedi, Vader says it twice more in conversations with the Emperor [39:16 and 1:07:38], and Admiral Piett says it to Vader ("As you wish, my lord") [56:13]. In The Phantom Menace, Nute Gunray says, "As you wish" at the end of a conversation with Darth Sidious [5:04], and in Revenge of the Sith, Captain Typho says, "As you wish, my lady," to Padmé [1:41:23].
17:57 - Anakin: "It's over, Clovis." Obi-Wan also says this, albeit to Anakin, in Revenge of the Sith: "It's over, Anakin!" [1:59:17].