Will one be rewarded for reviewing five parts of the Quran daily with a memorizer, after the memorizer has completed the recitation of the entire Quran?

This act of reciting the Quran and reviewing it with your companion is a good deed for which you will be rewarded, for several reasons: listening to the Quran, helping and strengthening your brother, spreading and studying knowledge, assisting in righteousness and piety, and following and reviving the Sunnah of reviewing the Quran.