Post your citation. Where does it say that?
Your statement is quite false. The only people who are "rejected for salvation" because they aren't Catholics (and not for some other reason) are those who know in their hearts that the Catholic faith is the true faith, but who nevertheless willfully refuse to embrace it or remain in it. (Vatican II, Lumen Gentium)
Obviously, most believing Protestants do not know in their hearts that Catholicism is the true faith. "Most," but maybe not "all".
The position you're accusing us of holding is sometimes called "Feeneyism". Leonard Feeney, a priest in Boston, was disciplined in 1948 by the Vatican for insisting that his superior (the Archbishop of Boston) was a heretic for believing that Protestants could get to heaven.
By the way, you believe that only Christians go to heaven, right? Do you think that a Catholic who believes in the tenets of Catholicism is a Christian?
A Catholic who believes in these scriptures and acts on them is a Christian...ANYONE who believes on these scriptures and acts on them is a Christian regardless of the institution he/she choses to attend...
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph 2:9 Not of works, lest any man should boast.
Eph 2:10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Rom 10:9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
Rom 10:13 For whosoever shall call upon the name of the Lord shall be saved.
Joh 5:24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
And those who mock Protestants for claiming the indwelling of the Holy Spirit and the leading of the Holy Spirit, or that only the magisterium or clerics are led by the Holy Spirit should pay special heed to this scripture...
Rom 8:9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
How could someone know the Catholic faith is the only true faith and then reject it? That would be impossible for any sane human being. Worse than suicide, to condemn oneself to a loss of salvation. Think again on this one.
Save us the finger pointing and post all the data from your catechism as to requirements for salvation...