Looking on the internet deeply has found these results:

All you need to do is protect them is the most popular phrase on the web.

All you need to do is to protect them 12 results on the web	All you need to do is protect them 167,600 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
And someone needs to protect them. As for children, we all agree that there is a need to protect them. I trust them, but we need to protect them from this. You need to protect my wife from prosecution. Well, eagles are we need to protect them... I share your view that we need to protect them. Fish and Wildlife no longer need to protect them. And yet I have this innate need to protect them.	Well, eagles are we need to protect them... And someone needs to protect them. They're brilliant, they're talented, and all I've ever tried to do is protect them. And all you want to do is protect your baby. All you need to do is protect this bag and make sure it arrives at this address by midnight tonight. And yet I have this innate need to protect them. I share your view that we need to protect them. Fish and Wildlife no longer need to protect them.

All you need to do is to protect them

12 results on the web

All you need to do is protect them

167,600 results on the web

More popular!

Well, eagles are we need to protect them...
And someone needs to protect them.
They're brilliant, they're talented, and all I've ever tried to do is protect them.
And all you want to do is protect your baby.
All you need to do is protect this bag and make sure it arrives at this address by midnight tonight.
And yet I have this innate need to protect them.
I share your view that we need to protect them.
Fish and Wildlife no longer need to protect them.