I hate the bomb truck level, it sucks.

[MugiwaraLee]

Every time I tried to attack the enemy base the bomb trucks just spilled out of the base like roaches. Pairing that VERY conveniently the AI also had a tank that slowed my units down for 5 seconds. After uselessly bashing groups of my tanks up against the enemy base I just gave up. I feel like the trucks should also have friendly fire.

[Rogue Command Official]

The bombs can be rough, especially if you are going for slower units like tanks.
If you units with Shields (which block an instance of damage no matter the amount) or if you send out some cheaper units up front to sacrifice to the bombs, they are definitely manageable.
Another option is having quicker units like the Defender or Energy Hunter and then kite them.
Also fun is teleporting away the moment they explode.

But yeah, I think having units with shields in front is the easiest way to deal with them.

Good luck!