If someone says to me "consciousness, therefore god", what's the best way to respond?

[Angrboda]

It's called poisoning the well. If they can claim something is cliche or discredited, it gives the faithful a good excuse to ignore it. Just as William Lane Craig gave a talk on the ten worst objections to the cosmological argument that included legitimate objections, it's a pre-emptive strike on the legitimacy of the criticism. It's nothing but hot air.