I will go alone into Rome. If I do not return by sunset, then let the army into Rome.

9 seconds sound clip from the The Fall of the Roman Empire (1964) movie soundboard.

You can hear this line at 02:28:16.088 in the Blu-ray version of the movie.

Quote context

[...]

- And now even you must see that this is the only way to answer them.

- Look at his face. Tell me what I must do in his name.

- March the army into Rome and drench the city with blood!

- He is dead.

- He does not seem dead to me. I can still feel his life. And can hear his words.

- He was my father's friend.

- I will go alone into Rome. If I do not return by sunset, then let the army into Rome.

- I've been made a god. Did you know? I have ordered 30 days of celebration to mark the event.

- Leave at once, Commodus! I can still spare your life!

- I've finally understood why they have sent me this pestilence. There was famine, there were too many mouths, so the gods made less mouths.

- Commodus, the army is at the gates of the city.

[...]