Here's what rhymes with protocole.
coal goal kohl whole role soul hole pole roll sole bowl fol mole poll toll knoll shoal dole foal bole boll thole vole tole dolour skoal patrol stole parole scroll droll cajole troll unroll prole stroll enroll casserole extol vacuole petiole bedroll condole oriole maypole extoll rissole innersole control glycerol systole buttonhole pigeonhole camisole cubbyhole beanpole profiterole arteriole decontrol quadrupole