"I'm thankful for the safety of these cars ... I'm alive thanks to the job of the last 10 to 15 years of Formula One."
Both drivers were unharmed in the crash that both agreed was just a racing incident with neither driver significantly at fault.
Alonso said it felt like the crash unfolded in slow motion from inside his cockpit.
"Unfortunately I was flying so you see the sky then the ground then the sky then the ground ... you want to stop but it doesn't stop," he said.
"It keeps going and going and going. It was quite scary but at the last moment the car stopped and I had a little space to go out and I said 'I will go out quickly because my mother will be watching at home'."
Gutierrez ran to Alonso's aid and embraced his colleague when he realised he was unhurt.
"The most important thing is that we are both fine - it was a very scary moment and not very pleasant to see how his car ended up," Gutierrez said.
"When I saw his car I came out as quick as possible and ran to him ... obviously it was a big relief to see that he was fine.
"To be honest I think we were both a bit shocked from the crash. We came together and spoke a little bit but we're all good most importantly."