Got about 10 minutes? Listen from 11:18 to 21:55 - A Catholic response to FAITH ALONE which is a non-Biblical, popular protestant belief.
Caller: Solid paraphrase: It's all about Christ. Faith in Christ alone is all that matters. I can do nothing to earn my salvation. Saved by Grace by faith in Christ alone. My understanding in Catholic faith is that you believe that as well but there are also sacraments and works that need to be added to that in order for salvation to be complete.
Dr. Anders: Direct question to Christ in scripture, "What should I do to be saved? Jesus didn't respond all you have to do is have faith in me. In Romans 2:13, Paul talks about obeying ( see also Matthew 25 or Revelation 20).