Now that we're all sede vacantists, there's really no point in debating the wisdom of Pope Benedict's decision any further. It's a done deal, it will bear the fruits it will bear. But now, it's time to prepare for the pontificate of the next man.
It is fitting that we should pray regarding the outcome. Today at Mass, our parish distributed this prayer, which I heartily recommend that you also pray each day at least until the new pope has been chosen:
V. I will raise Me up a faithful priest, who shall do according to My Heart and My Soul.
R. And I will build him a faithful house: And he shall walk all day before My Annointed.
Let us pray.
We must humbly entreat Thee, O Lord, that Thy boundless goodness may grant as pontiff to the most holy Roman Church one who shall ever be both pleasing to Thee, by his loving zeal in our regard, and, by his beneficent rule, deeply revered by Thy people to the glory of Thy name. Through Christ our Lord.
I hope your parish also recommended a particular prayer for this purpose.