In that case, I’ll throw in a few more suggestions along those lines (some of these I’m thinking of as like self-motivational (also demotivational) sayings, some as straight up prime directives, and some just ironic).

Don’t fail (ESB)
Take this mask off (ROTJ)
Let yourself be destroyed (ESB)
You are in command now (ESB)
Destroy the Emperor (ESB)
Rule the Galaxy (ESB)
Send a clear transmission (ESB)
Use any methods necessary (ESB)
Me destroy you (ESB)
Control[clip end of “controlled”] your fear; release your anger (ESB)
I want [bleep for humor], not excuses! (ESB)
Realize your importance, discover your power, complete your training, end conflict, bring order to the galaxy (ESB)
Find new ways to motivate (ROTJ) [bleeping “motivate” would be funny…]
Know the power of the Dark Side (ROTJ)
Unwise to lower your defenses (ROTJ)
Underestimate the power of the Dark Side (ROTJ)
You will not fight (ROTJ)
Obi-Wan [edit together] I must face him alone (SW)
Don’t be too proud (SW)
Destroy a planet (SW)
Lack of faith (SW)
I am the master (SW)
Your powers are weak (SW)
See the end of the Rebellion (SW)
Destroy them ship to ship (SW)
Sever all ties with the past (Force Unleased VG)
Now this is pod racing (Lego Star Wars: The Empire Strikes Out)

Really hoped to think of a way to fit a Darth Vader line from The Holiday Special, but I don’t think there’s much that can be done with “I want the Rebels located and identified… if it means searching every household in the system!” other than “Search… every household in the system” but it isn’t as funny as many of the others.