In the movie Star Trek II: The Wrath of Khan, did Captain Terrell and Commander Chekov have their phasers when they encountered Khan and his group outside of the Botany Bay?
Yes and no (but mostly no).
22 EXT. CARGO HOLD AIRBAY 22
Terrell and Chekov emerge, helmeted, then stop dead.
23 ANGLE - THEIR POV 23
A RING OF SUITED FIGURES has them surrounded.
That being said, the official novelisation does mentions Chekov having a phaser. The ring of people had the drop on them and they were swiftly disarmed.
"Beam us up!" Chekov cried into his transmitter.
As he grabbed at his phaser, one of the suited figures lunged forward, disarmed him, and knocked him back into the airlock.