What is the Hebrew prayer written on tallit?

The Hebrew prayer written on tallit is the Tzitzit blessing, which is recited when putting on the tallit:

בָּרוּךְ אַתָּה אֲדֹנָי אֱלֹהֵינוּ מֶלֶךְ הָעוֹלָם, אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ לְהִתְעַטָּף בְּצִיצִת:

Blessed are You, Lord our God, King of the universe, Who has sanctified us with His commandments and commanded us to wrap ourselves in tzitzit.