The full passage reads:
Und man rechnet die Zeit nach dem dies nefastus, mit dem dies Verhängniss anhob, — nach dem ersten Tag des Christenthums! — Warum nicht lieber nach seinem letzten? — Nach Heute? — Umwerthung aller Werthe!…
And one calculates time from the unlucky day on which this fatality arose – from the first day of Christianity! — Why not rather from its last? — From today? Revaluation of all values!
KSA 6, pp. 253 translated by R. J. Hollingdale, 1968
Decree against Christianity
Also suppressed was Nietzsche’s “Decree against Christianity” (or “Law Against Christianity”). This part was added back on the 1889 edition and the following editions of The Antichrist. This part consists of seven propositions that can be summarised as such:
1) Every type of anti-nature is depraved
2) Participation in religion is an assassination attempt on public morality
3) The location from which Christianity has spread should be eradicated
4) The Christian teaching on chastity is a public instigation to anti-nature
5) The Christian priest is a chandala – he should be ostracized, starved
6) What was before called “holy” and “God” is to be called criminal and cursed
7) “The rest follows from this”