The Clone Wars - S6E10 - "The Lost One"

1:16 - Plo Koon (studying the display showing the signal the clone troopers are tracking):  "That is it."  In The Empire Strikes Back, Darth Vader says basically the same thing after seeing an image of the Rebel shield generator that the probe droid sent back, "That's it" [20:56].

16:52 - Silman:  "The Pikes are not to be trusted."  Obi-Wan, speaking to Anakin and referring to Padmé, uses the same expression in Attack of the Clones:  "And don't forget she's a politician and they're not to be trusted" [12:36].

19:17 - Obi-Wan:  "Minister Lom, if you're going to help us, now is the time."  While speaking to Tion Medon in Revenge of the Sith, he says something similar:  "If you have warriors, now is the time" [55:19].