ORATIO SUPER POPULUM (2002MR):
Tuere, Domine, populum tuum,
et ab omnibus peccatis clementer emunda,
quia nulla ei nocebit adversitas,
si nulla ei dominetur iniquitas.
This "Prayer over the people" was in the Liber sacramentorum Augustodunensis for Ash Wednesday, and it seems to have been inspired in some measure by St. Leo the Great’s s. 57.
SLAVISHLY LITERAL VERSION:
Protect your people, O Lord,
and mercifully cleanse it from all sins,
for no adversity will harm it,
if it is dominated by no iniquity.
O Lord, protect Your people,
and cleanse us from every sin,
because no adversity can harm us,
if we are not dominated by sin.
This comes at the end of a Mass in which we hear also of the Sign of Jonah and hear Christ’s words about the evil generation, how the men of Nineveh will arise in judgment.
I think you have probably heard the darkly facetious quip that if God does not punish us now, He will owe Sodom and Gomorrah and apology.