Arsenal are currently top of the Premier League table, six points ahead of second-placed City, who have a game in hand on the Gunners.
The title race is heating up as City slowly catch up to the North London side who dropped points against Bournemouth before their poor 0-0 draw against Sporting in midweek.
A loss against City would be devastating for Arsenal who are already feeling the pressure under manager Mikel Arteta who Henry says need to go all out to secure 3 points.
“I believe in what he (Arteta) said, I’m a big believer. I believe in what I see. I believe in the fire but when you talk like that, you have to do it then. But I didn’t see that tonight.
“Go and win at Man City. I want to see that fire there. That’s the fire I want to see, I believe Mikel, yes, but go and show it.
“Again, I do believe. I’ve been saying since the beginning of the season that this year I do believe that we can win the league. This is the biggest chance in your life to not only shut anyone down, but to prove that yourself as a team that we can.
“Now, I heard fire. I want to see that fire at the Etihad.”
Defeats to City, Southampton and Bournemouth look to have knocked Arsenal’s confidence in recent weeks and after their goaless result against Sporting, Arteta’s side may seriously struggle against tital rivals City.
Arsenal currently lead the Premier League with 70 points from 32 games but must not collapse in the final few games if they are to secure their first title in over two decades in what could be a historic season for the club.