Six victims will attend the pope’s private morning Mass in his Vatican and then meet with him afterwards.
A group of women in love with Catholic priests have urged Pope Francis to make celibacy optional.
The Roman Catholic Church, Church of England and al-Azhar in Egypt set up the Global Freedom Network.
Pope Francis on Monday described abortion as ‘horrific’.
Earlier this month some divorced and remarried couples were denied communion in Germany.
It is not yet clear whether Ireland’s Parliament will legalise abortion.