As with Mormons, you have understand how terms are used. For a RC, saved by grace means salvation by grace thru works of merit.
That by God's grace the salvation process begins by formally being justified by your own (infused) holiness, then you end up working yourself into a condition whereby your are good enough to enter Heaven.
This is under the rubric of the cross, but rather than God justifying the unGodly by counting his faith for righteousness, as Rm. 4 teaches, instead God justifies the Godly thru regeneration, so that Abraham must have becoming born again in Gn. 15:6, or was already justified, neither was which is what the text says.
And RC relegate "not by works" to only mean the Law, though Titus 3:5 i written to a Greek and makes no distinction, and"if there had been a law given which could have given life, verily righteousness should have been by the law." (Galatians 3:21)
It is true that in a sense a believer is justified by works, insofar as this testifies to him truly being a believer, thus whosoever shall call (a response=work) upon the name of the Lord shall be saved, or he that believeth and is baptized shall be saved, for if they do such things then it shows that are believers.
And in grace, God also rewards faith (Heb. 10:35) in recognition of works, though in justice they deserved Hell, as that the their real wage for sins.
Too tired to write more now
Affirmative sir. I have dealt with enough Mormons, JWs, INC, RCs and Quiboloy's people. I would say the INC and Quiboloy's people are some of the hardest to deal with. Extremely indoctrinated and extremely blind, with a capital B. You must define your terms. For instance, you know exactly what faith and grace mean. Those words conjure up a whole different concept in their minds, so it is not easy. Take care.