Do you deny that we Protestants are assured of salvation by our belief on Christ?

The Catholic Answers

No one can be sure of salvation until he is safely dead, finishing this life in a state of grace. During this life a man, no matter how just he may be, is able to forsake the path of justice and lose all the merit of previous goodness. You may think this hard, but a murder on Tuesday could not be excused on the score of almsgiving to a beggar on the previous day. Previous good actions do not justify subsequent bad ones. Thus God says, “If the just man turn away from his justice and do iniquity …. all his justices that he hath done shall not be remembered.” Ezech. XVIII., 24.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty