Looking on the internet deeply has found these results:

I will be back is the most popular phrase on the web.

I will be back shortly 1356,000 results on the web	I will be back 1101,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Right now, we'll take a short break and we will be back shortly. [whispers] Chief Justice will be back shortly with his decision. That is not all, Madam President;I will be coming back to that shortly. Dr Tumii will be back shortly. No, my friend will be back shortly. I'll be back shortly to give you your first injection. Make sure this party gets rolling And I will be back shortly. Henry will be back shortly with your glass of port, your apples and salted biscuits.	I do not know when I will be back. I will be back in an hour to check on your progress. Point is, I will be back in 10 minutes. I will be back at the car in ten minutes. I will be back to check your progress. I will be back for that eventually. So I will be back in a minute. I will be back for her in two days.

I will be back shortly

1356,000 results on the web

I will be back

1101,000,000 results on the web

More popular!

Right now, we'll take a short break and we will be back shortly.
[whispers] Chief Justice will be back shortly with his decision.
That is not all, Madam President;I will be coming back to that shortly.
Dr Tumii will be back shortly.
No, my friend will be back shortly.
I'll be back shortly to give you your first injection.
Make sure this party gets rolling And I will be back shortly.
Henry will be back shortly with your glass of port, your apples and salted biscuits.