You Do Need power plug adapter while traveling from Trinidad & Tobago to Lebanon.

Here is Why You Need An Adapter

The outlet and plug type used in Lebanon are C, D and G and in Trinidad & Tobago are A and B. This is how they look like.

Trinidad & Tobago

In Trinidad & Tobago, outlets of type A and B are in use.

Type A

Type B

Lebanon

In Lebanon, outlets of type C, D and G are in use.

Type C

Type D

Type G