I disagree. It's His resurrection that saves us which is why He died for all, but only those who believe He rose from the dead, are saved. God keeps His word to save whoever believes.
1 Corinthians 15:17
And if Christ be not raised, your faith is vain; ye are yet in your sins.
1 Co 15:17 is saying that Christ's resurrection was a demonstration of the efficacy of His sacrifice - that by the Father's acceptance of His sacrifice, that He resurrected Christ, and by that resurrection, we can know that we are no longer in sin.
No, Christ did not die for all; He died only for His elect.
[Mat 20:28 KJV] 28 Even as
the Son of man came not to be ministered unto, but to minister,
and to give his life a ransom for many.
[Mar 10:45 KJV] 45 For even
the Son of man came not to be ministered unto, but to minister,
and to give his life a ransom for many.
[1Pe 1:2-3 KJV]
2
Elect according to the foreknowledge of God the Father, through sanctification of the Spirit, unto obedience and sprinkling of the blood of Jesus Christ: Grace unto you, and peace, be multiplied.
3 Blessed [be] the God and Father of our Lord Jesus Christ, which
according to his abundant mercy hath begotten us again unto a lively
hope by the resurrection of Jesus Christ from the dead,
[1Pe 2:24 KJV] 24 Who his own self bare our sins in his own body on the tree,
that we, being dead to sins,
should live unto righteousness:
by whose stripes ye were healed.
Do you understand the concept of a Savior (singular)? For a Savior to actually be THE Savior, He alone must be the one to do the saving in its fullness with no contribution from anyone else being either possible or permitted, otherwise, He would not, could not, be the Savior. Yet the Bible clearly, beyond dispute, tells us that Jesus, and Jesus alone, is the Savior