Lightning came into your house thru the power mains. Report the incident to Meralco at once, let them check distribution for stolen grounding rods/ wires in your area.

As for the appliances, damage will depend on how the electronics were designed to absorb surges. Commonly, power supplies are protected with Varistor that clips overvoltages, but like AVR's and UPS's they are ineffective for lightning without proper earth ground. Static could discharge from elctronic device to the humid air and that fries the sensitive electronics.

To quickly check the earth ground inside your distribution panel, you should be able to measure L-G-N (110-0-110) Line-Ground-Neutral AC Volts, this is for Metro Manila with balanced transmission.