وَإِذًۭا لَّءَاتَيْنَٰهُم مِّن لَّدُنَّآ أَجْرًا عَظِيمًۭا

And then We would have given them from Us a great reward.

And We should then have given them from our presence a great reward;

And then We would certainly have given them from Ourselves a great reward.

We would have given them a great reward

And indeed We should then have bestowed upon them a great reward from Ourselves.