When is Antony alone with Caesar's body, and what does he say?

Brutus allows Antony to be alone with Caesar's body to write his funeral speech.

Antony says....

O pardon me, thou bleeding piece of earth,
That I am meek and gentle with these butchers.

Antony ends his soliloquy with.....

That this foul deed shall smell above the earth,
With carrion men, groaning for burial.