The Immaculata prayer is a Traditional Catholic Marian prayer composed by Saint Maximillian Kolbe.
It is a prayer of consecration to the Immaculata, i.e. the immaculately conceived Virgin Mary.
The consecration prayer is as follows:
A shorter version of the prayer can be used for the daily renewal of the consecration:Aquilina, Michael, 2000. Book of Catholic Devotions page 194
References
Bibliography University of Dayton Marian prayers Consecration.com Women for Faith and Family