Here is the preparation prayer for WYD in Madrid:
(Available to download here)

Friend and Lord Jesus Christ,?
How great You are!
With Your words and Works You have revealed to us
Who God is, Your Father and our Father,?
and Who You are: our Saviour.
You call us to be with You.

We wish to follow You wherever You go.
We thank You for Your Incarnation.?
You are the Eternal Son of God,
but You humbled Yourself and became man.?
We thank You for Your Death and Resurrection.?
You obeyed the Father's will to the extreme
and for this reason You are the Lord of all persons and things.?
We thank You for having remained amongst us
in the Eucharist.?
Your Presence, Your Sacrifice, Your Banquet?.
Invite us to remain always united to You.
You Call us to work with You.
We wish to go wherever You send us:
to announce Your name, to heal in Your Name,?
to bring all of our brothers to You.

Grant us Your Holy Spirit, to enlighten and strengthen us.?
The Virgin Mary, the Mother You gave us on the cross,
always encourages us to do what You say.?
You are our Life. May our thoughts,?
our love and our actions?
always be rooted in You!
You are our Rock. May our faith in You
always be the solid foundation?
of our life!

??We pray for Pope Benedict XVI,
for the Bishops and for all those who
are preparing the next World Youth Day?
in Madrid.
We pray for our family and friends
and especially for?
all the young people who will get to know you
in this encounter, thanks to the firm and joyful?
testimony of the faith.