Here's what he said:
I am especially grateful to all who have been praying for the success of the visit, since prayer is the most important element of all. Dear friends, I say this because I am convinced that without the power of prayer, without that intimate union with the Lord, our human endeavours would achieve very little.
There's still time to leave your prayer for the pope (and our webmaster tells me there's been a huge spike of prayers at the site today). Click here. We'll be forwarding all of the prayers to Pope Benedict after his trip.