A composition comprising at least a pyridylethylbenzamide derivative of general formula (I)(a) and a compound capable of inhibiting the spores germination or mycelium growth by acting on different metabolic routes (b) in a (a)/(b) weight ratio of from 0.01 to 20. A composition further comprising an additional fungicidal compound. A method for preventively or curatively combating the phytopathogenic fungi of crops by using this composition.