Perfect Rhyme (rare):
* It's hard to find perfect rhymes for "protruding"
Near Rhyme (similar sounds):
* Including
* Concluding
* Excluding
* Introducing
* Invading
Eye Rhyme (spelled similarly, but pronounced differently):
* Rooding (this word is not commonly used)
Near Rhyme with a different vowel sound:
* Producing
* Reducing
* Recruiting
* Securing
The best rhyme will depend on the context of your poem or sentence.