Marinate salmon in olive oil, orange and lemon zest and dill for 6 hours. Wrap each piece of fish tightly in grape leaves. Lay out 1 piece of filo and butter lightly with pastry brush. Place fish at one end and fold outer edges of filo over salmon. Begin rolling salmon in filo buttering between each roll. Repeat process with remaining salmon and bake in a preheated 450 degree oven until golden brown, about 6 to 8 minutes.