To be right to the point,
How can one be save according to Catholic faith?
Is it believe in Christ and His redemption only?
Is it belief in his resurrection only?
To be direct, for Unitarians, Protestants, Evangilicans, etc are they going to be saved too? or should they convert?
PS: How can one be sure his faith is the true one? If born agnostic, Protestant, Unitarian, Catholic, etc, How one becomes sure?