A Jewish prayer said during the seder meal is?

There is a "script" for the Passover Seder, called a Haggadah. Actually, there are many versions of this script, but all include expanded blessings over the meal, and a ceremony involving a ritual meal including matzoh, bitter herbs (usually horseradish in the United States), a burnt lamb bone (which, of course, is not eaten!), haroset (an Apple and nut mixture -- there are all sorts of recipes for this), and greens dipped in saltwater. Four glasses of ritual wine are also served. In the traditional service, a prayer is offered for the restoration of the Temple in Jerusalem.