Looking on the internet deeply has found these results:

in conclusion is the most popular phrase on the web.

in a nutshell 148,500,000 results on the web	in conclusion 160,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	So in conclusion, I'd like to leave you with actually four messages. Being in conclusion not only high quality shoe producer, but also being part of your important choices. So, in conclusion, not at all close. And in conclusion, let me say... in conclusion, this costume sucks! Its graphic chip permitted 80 columns of characters; in conclusion it was a computer with semiprofessional aspect & caracteristics. But in conclusion, I'd like to say, congratulations, Harvey. So, in conclusion, I think the message is clear.

in a nutshell

148,500,000 results on the web

in conclusion

160,200,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

So in conclusion, I'd like to leave you with actually four messages.
Being in conclusion not only high quality shoe producer, but also being part of your important choices.
So, in conclusion, not at all close.
And in conclusion, let me say...
in conclusion, this costume sucks!
Its graphic chip permitted 80 columns of characters; in conclusion it was a computer with semiprofessional aspect & caracteristics.
But in conclusion, I'd like to say, congratulations, Harvey.
So, in conclusion, I think the message is clear.