1) Fungicidal compositions comprising: a) at least one pyridylmethylbenzamide derivative of formula (I): ##STR00001## in which the various radicals are as defined in the description, and b) at least one compound (II) which is a phosphorous acid derivative, or phosphorous acid itself, and also alkali metal, alkaline-earth metal or metallic salts thereof. 2) Process for curatively or preventively combating the phytopathogenic fungi of crops, characterized in that an effective and non-phytotoxic amount of one of these fungicidal compositions is applied to the aerial parts of the plants.