These two prayers are included in what is known as the Leonine Prayers, said after every Low Mass in the Traditional Latin Mass. Many people today grew up without hearing of them, but before Holy Mass was trivialized by the "spirit of Vatican II", all Catholics were familiar with them. Pope Leo XIII (an underrated pope if ever there was one) directed that they be said after every Low Mass to plead for protection of the Church against malevolent forces. He gave this order following a vision that he had of the Church being attacked by demonic forces. Understanding now how the Vatican II council was largely highjacked by Freemasons to undermine the Church, we can easily understand why they wanted those prayers discontinued. And so they were.
After Pope Benedict's moto proprio allowing the Traditional Latin Mass to be prayed with greater freedom, other priests began to re-incorporate at least part of the Leonine prayers after the Novus Ordo Masses.
Cardinal Cupich has decided that these prayers are simply not acceptable, being the true progressive that he is. He has been the subject of many posts of mine (and of others, too). Consider his chequered history. While Bishop of Spokane, he forbade his priests from participating in the 40 Days for Life campaign. He was a key aide to Pope Francis in conducting the charade known as the Synod on the Family. A parish in Chicago had the Traditional Latin Mass; Cupich quashed that by suspending the pastor's faculties. I could go on, but don't want this post to get too long.
Now for Taylor Marshall's video on this latest Cupich scandal.