Place garlic, mayonnaise and Italian seasoning in a bowl, stir to combine.
Divide mayonnaise mixture evenly between the two halves of bread. Spread evenly on each half and then wrap each half of bread in foil.
Place foil-wrapped bread on grill (mayonnaise side up) over indirect heat for 15 minutes. Remove from grill
carefully unwrap bread from foil.
Place unwrapped bread face down on grill for 2-4 minutes. Watch carefully to avoid burning.
Remove from grill, sprinkle with cheese, slice and serve.
