don’t grill unless you’ve got a gas flame grill that gets very hot indeed. fry, oil the steaks not the pan, very hot pan, depending on thickness 3/4 mins each sides. salt after cooking, last 2 mins of cooking add butter to the pan and baste.
thread closed, no ifs or buts.
EDIT: for a quick sauce, after cooking steaks place on plate. pour off excess fat from the pan, add a spalsh of brandy, stir, geting all the bits off the pan add a bit of beef stock. reduce quite a bit, add some double cream and herbs if you want, season to taste.