Heat a large cast-iron skillet over medium-high heat.
Sprinkle steaks with 1/4 teaspoon salt and 1/4 teaspoon pepper; coat steaks with cooking spray.
Add steaks to pan; cook 4 minutes on each side or until desired degree of doneness.
Remove steaks from pan; keep warm.
Add port, cranberry sauce, broth, 1/8 teaspoon salt, 1/8 teaspoon pepper, and garlic to pan, scraping pan to loosen browned bits. Reduce heat, and cook until liquid is reduced to 1/4 cup (about 4 minutes).