This fine prayer is the Collect from the Mass for the Election of the Pope found amongst the Votive Masses of the 1962 Missal. Pray it every day:
We humbly beseech you, O Lord, that of your boundless mercy you would grant to your Holy Roman Church a Pontiff who, by his tender care of us, may ever find favour in your sight; and ever be honoured by your people, because of his good government of your Church, to the glory of your name. Amen.