How we cite our quotes: All quotations are from Star Wars: Revenge of the Sith.
Quote #1
ANAKIN: Break left, fly through the guns on that tower.
Obi-Wan flies to the left of a huge tower on a Republic Cruiser. The two droid drop fighters follow.
OBI-WAN: Easy for you to say … why am I always the bait?
ANAKIN: Don't worry. I'm coming around behind you.
In the opening scene, it isn't really the dialogue that shows trust; rather, it's all of the things that Obi-Wan and Anakin do for each other that show explicit confidence in the other. Obi-Wan allows Anakin to use him as bait to draw droids into his line of fire, and he has absolute faith that Anakin will not only help him while droids tear apart his ship but that he would complete the mission without him if necessary. This is one of the only scenes that depicts their close relationship and how they rely on each other.
Quote #2
OBI-WAN: Anakin, be careful of your friend Palpatine.
ANAKIN: Be careful of what?
OBI-WAN: He has requested your presence.
ANAKIN: What for?
OBI-WAN: He would not say.
ANAKIN: He didn't inform the Jedi Council? That's unusual, isn't it?
OBI-WAN: All of this is unusual, and it's making me feel uneasy. You're probably aware that relations between the Council and the Chancellor are stressed.
ANAKIN: I know the Council has grown weary of the Chancellor's power, mine also for that matter. Aren't we all working together to save the Republic? Why all this distrust?
OBI-WAN: The Force grows dark, Anakin, and we are all affected by it. Be wary of your feelings.
Due to their history, Anakin is too trusting of the Chancellor, and Obi-Wan is trying to advise him to put up his guard. This is relatively unique in a movie filled with distrust and suspicion—why does Anakin blindly accept the Chancellor's supposedly good intentions?
Quote #3
PALPATINE: I need your help, son.
ANAKIN: What do you mean?
PALPATINE: I fear the Jedi. The Council keeps pushing for more control. They're shrouded in secrecy and obsessed with maintaining their autonomy … ideals I find simply incomprehensible in a democracy.
ANAKIN: I can assure you that the Jedi are dedicated to the values of the Republic, sir.
PALPATINE: Nevertheless, their actions will speak more loudly than their words. I'm depending on you.
ANAKIN: For what? I don't understand.
PALPATINE: To be the eyes, ears, and voice of the Republic.
This is where things start to get fishy. Anakin trusts Palpatine. Anakin mostly trusts the Jedi—at least, until the Chancellor starts pouring poisonous thoughts about them into Anakin's ears.