Ingredients
1/2 cup Kraft Mayo Light Mayonnaise 
1 Tbsp. lemon juice 
1 tsp. dill weed 
1/2 tsp. grated lemon peel 
1 lb. firm-textured fish fillets (such as cod, catfish or salmon)

  
Directions
Mix mayo, juice, dill and peel. 
Place fish on greased grill over medium coals. Brush with 1/2 of the mayo mixture.
 
Grill 5 minutes; turn. Brush with remaining mayo mixture. Grill an additional 5 to 8 minutes or until fish flakes easily with fork.  For more flavor, increase lemon juice to 2 Tbsp.

Source:  Kraft Canada