We say קדוש אתה ונורא שמך ואין אלוה אחר מבלעדיך - You are holy and Your name is awesome and there is no other G-d than You.
Explained Rav Dovid'l of Tolna: You are soooo incredibly holy and Your name inspires awe - so how can we ask you for our physical and somewhat mundane needs?? The answer is - אין אלוה אחר מבלעדיך - You are the only G-d and there is none other, so WHO can we ask instead!!:-)
