While today is the Solemnity of the Immaculate Conception, for the sake of being complete let us look at the Collect for Friday of the 1st Week of Advent:
This prayer was in the 1962 Missale Romanum and is taken from the ancient Gregorian Sacramentary.
Excita, quaesumus, Domine, potentiam tuam, et veni,
ut, ab imminentibus peccatorum nostrorum periculis,
te mereamur protegente eripi,
te liberante salvari.
Rouse up Your might, we beseech You, O Lord, and come,
that, as You are protecting us, we may merit to be snatched away
from the menacing dangers of our sins
and, as You are freeing us, be saved.