عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ لَا يَسْمَعُ بِي أَحَدٌ مِنْ هَذِهِ الْأُمَّةِ يَهُودِيٌّ وَلَا نَصْرَانِيٌّ ثُمَّ يَمُوتُ وَلَمْ يُؤْمِنْ بِالَّذِي أُرْسِلْتُ بِهِ إِلَّا كَانَ مِنْ أَصْحَابِ النَّارِ
It is narrated on the authority of Abu Huraira that the Messenger of Allah (may peace be upon him) observed: By Him in Whose hand is the life of Muhammad, he who amongst the community of Jews or Christians hears about me, but does not affirm his belief in that with which I have been sent and dies in this state (of disbelief), he shall be but one of the denizens of Hell-Fire. (Sahih Muslim, Hadith 218)
Jews were muslims for a long time. Christians were muslims for a very short time.
>I believe in Allah … as a christian.
If you were a unitarian christian who was genuinely ignorant of Muhammad and The Quran, then you would have a sliver of a chance, I might be wrong, Allah knows best.