Characters
These are not the Droids you're looking for.
— Obi Wan Kenobi · Star Wars: Episode IV - A New Hope
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker simply tells someone that the droids they are seeking are not the ones in front of them. It is a firm denial phrased as a gentle correction, steering attention elsewhere by asserting that the search target is something other than what is present.
Context reviewed