Italian Jewish leaders say they will not participate in an annual day of interfaith activities with Catholic leaders next January to protest a reinstated Catholic prayer that calls for Jewish conversion to Christianity.

At the heart of the decision is the Old Latin Mass, which ceased to be used in the 1960s but was revived by Pope Benedict XVI last year.

In the old version of the prayer, Jews were described with the word “blindness” and Catholics prayed that God would “take the veil from their hearts.”

A new version published by the Vatican last February removed the word “blindness” and instead prayed for God to “enlighten (Jews’) hearts so that they may acknowledge Jesus Christ, the savior of all men” and voice the hope that “all Israel may be saved.”

Despite the change, the new and arguably less offensive version of the prayer drew complaints from Jewish leaders around the world, including the U.S.-based Rabbinical Assembly of Conservative Rabbis.