You dive slightly, like with a glider. That has zero thrust.

When I flew the twin turbo-prop HS 748 we had to practise single engine flying. For that they throttled one engine back to a zero thrust condition to simulate a feathered engine (after we simulated the shut-down drill).
Zero thrust was not with idle throttle, it was just up (1/2" or so) from idle. Idle throttle would have given net drag at our flying speed. And that was with positive pitch on the props, flight idle pitch. Rolls Royce Darts did not have reverse pitch props. But they had two idle settings, flight idle and ground idle. Ground idle had virtually zero pitch, and that was for engine starting and deceleration on the landing roll. It gave a lot of drag on the landing roll. So flight idle had significant positive pitch.