Indra was not worried about Sani.
Not only was Sani a devout follower of Mahadeva, but he was also the future God of Retribution!
The God of Retribution judges one's karma!
No matter what, the Three Aspects Deity wouldn't let Sani die.
He might experience a resurrection, to taste what it was like to come back from the dead.
Resurrection!
Such experiences were rare!
As for Antaka, if Antaka killed Sani, he would certainly incite Shiva's rage, and perhaps without even lifting a finger, a Trishula might fly straight at him.
Moreover, Sani had only been born not long ago.
He was still an infant!
If Antaka killed Sani, wouldn't that add the crime of infanticide?
"You might as well kill yourself!"
"If you kill yourself, you won't have to suffer by my hand!"
Indra clicked his tongue, shaking his head gently, and smiled at Antaka as he spoke slowly.
Boom!
The sky above was covered in dark clouds.