The manager should know whether any product to which you are allergic is contained in the meals served at that particular restaurant. Remember too that the situation will vary from restaurant to restaurant. Recipes are not set in stone for all restaurants to follow. Each chef will have his own variations on the theme. They all contain ground almonds or cashew nuts.
Biryanis contain almond flakes.
Peshawari nan contains chopped nuts. Tandoori dishes should be fine. Obviously avoid all of the breads. Avoid samosas as the pastry is made from wheat flour. Most restaurants use ground nuts for extra thickening so you should be safe with most dishes on the menu.