I'm trying to break down Cutcliffe's terminology here:
Flip Right Duo, X-Motion, Fake Roll 98 Block Pass Special
Flip- Either it means we are resetting the TE pre-snap or
the name of the formation is right, and we are now telling the offense to run the formation strong left.
Duo- Probably a twins set, telling X and Z to align on the same side of the field.
X-Motion- obviously a motion, probably towards the line of scrimmage as if he's going to seal the playside DE or LB.
Fake Roll- Bootleg?
98- Either it's the name of the run play that we are faking, or it's the name of the route combination that we are running.
Block Pass Special- Name of the pass protection, maybe. Or maybe special is a tag on the 98 route.