The Brazilian had to be taken off just four minutes after coming on as a substitute himself during the 2-0 victory in Wales.
“It was very unlucky. Fabinho is OK but he had a bit of shaky legs and that’s of course not a good sign in the moment,” Klopp told Liverpoolfc.com.
“It’s a 100 per cent ‘yes’ or go off; if it’s 95 per cent in that game in that position, we cannot make that decision [to stay on]. It’s all good.”