Against nautilus, Nautilus can play aggressive early as he has a lot of CC. Keep this in mind in the very early game.

In the lane, always make sure there’s a minion between you and him at all times to make it really difficult for him to land his g.

Keep in mind that Nautilus has the most CC in the game. Try and commit to trades when either his g or e is down to make it easier for you to kill him. Against nautilus, Nautilus can play aggressive early because it has a lot of CC. Keep this in mind in the game very early. In the way, always make sure that there is a minion between you and him at any time to make it really difficult for him to land his g. Keep in mind that Nautilus has the most CC in the game. Try and commit yourself to trading when his g or e is down to make it easier for you to kill him.