How would you respond to 'Jesus loves you'?

I was approached by 2 preachers in town today whilst sat outside a train station waiting for a friend. At first I tried to politely tell them that I am not just atheist, but anti-theist, and that I wasn't interested in their literature nor conversing with them (within this context anyway).

As they walked away, one of them said 'jesus loves you', to which I almost reflexively snapped back with 'fuck off', with full British snark and terseness.

I like debating, and find disagreements to be enlightening, but I find this and similar theistic well-wishes extremely offensive and accusatory.

How would you respond?

Edit: Context.