[morzh]

Just don't pry it with anything, you will dent the cabinet.
Use hands. Whatever you use to pull, the thumb and index of the same hand, or the indexes and middles of both hands - position them more or less diametrically and pull, in the former case wedging the fingers between the knob and the panel, or in the latter case using the knuckles as fulcrums against the front panel, close to the knob.