A creed is a litany of articles of faith, a litany of dogmas. Some quote the Athanasian Creed as a proof that noone can be saved without confessing the articles of the same creed, since that creed not only lists some articles of faith but also declares the necessity to confess said articles to be saved.
There is another creed which beside its articles of faith declares that noone can be saved without confessing the same articles. It is the profession of faith of the Vatican Council:
Profession of faith
1. [...] profession of faith which the holy Roman Church uses, namely:
[...]
4. I profess also that there are seven sacraments of the new law, truly and properly so called, instituted by our lord Jesus Christ and necessary for salvation, though each person need not receive them all. [...]
[...]
14. [...]
This true catholic faith, outside of which none can be saved, which I now freely profess [...]
papalencyclicals.net, Vatican CouncilThe text unequivocally states:
1.) (since the new law) noone can be saved without having received a sacrament
2.) anyone not confessing 1.) can't be saved
There is no use in quoting Fathers, Saints, theologians, catechisms or whatever other fallible sources to contradict and attack the creed of an ecuмenical council.