Pope Leo XIII's Prayer to the Holy Spirit

Holy Spirit, Spirit of Truth, come into our hearts. Grant the nations Your light and Your brightness, so that they may be united in faith and find their delight in You. Creator Spirit, stand ever by Your Church.

Endow her with Your power and strength, so that she may withstand all hostile attacks. By Your grace renew the spirit of Your servants whom You have anointed, so that they may glorify the Name of the Father and of His only-begotten Son.