Steak in Creamy Cajun Shrimp Sauce Surf and Turf

Name: Steak in Creamy Cajun Shrimp Sauce (Surf and Turf)
Ingredients: 2 tablespoons oil; 1 pound steak (such as strip loin, rib eye, etc.); cajun seasoning to taste; 2 tablespoons butter; 8 ounces shrimp, peeled and deviened; 4 cloves garlic; 1/4 cup chicken broth (or dry white wine); 1 cup heavy cream; 2 teaspoons dijon mustard; 1 tablespoon cajun seasoning (or to taste); 1/4 cup parmigiano reggiano (parmesan cheese), grated; 1 tablespoon lemon juice; 1 tablespoon parsley, chopped