si se lo

if ... it to him/her

→ si
phrase Uncommon #14,836
if ... it to him/her This is a combination of si, meaning “if,” and object pronouns. Se can refer to him, her, or them, while lo usually refers to a masculine singular thing or idea. The exact meaning depends on the verb and context.
SP: Si se lo explicas, lo entenderá.
EN: If you explain it to him, he’ll understand.

Y siéntese sólo si se lo ofrece.

And only sit down if you're offered a seat.

— Atlantis: El imperio perdido (2001)

Puede mucho más de lo que cree si se lo propone.

He can do much more than he thinks if he sets his mind to it.

Tomás nos habría ayudado si se lo hubiéramos pedido.

Tomás would have helped us if we had asked him.

Si se lo lleva, lo sigues.

If he takes it, you follow him.

Si se lo quiere dar a su mujer.

If you want to give it to your wife.

— Cadena perpetua (1994)

Probablemente vendría conmigo si se lo pidiera.

He would probably come with me if I asked him to.

— El señor de los anillos: La comunidad del anillo (2001)

Si se lo dieran a cualquier tonto, yo ya habría ganado uno.

If they gave it to any fool, I would have already won one.

— No hay otra opción (2025)

Si se lo pedimos, seguro que mete el peluche dentro.

If we ask him, he'll definitely put the stuffed animal inside.

— Nicky, la aprendiz de bruja (1989)

Si se lo cuentan a alguien, los encontraremos.

If you tell anyone, we'll find you.

Si se lo llego a llenar, me pega una paliza.

If I had actually filled it up, he would have beaten the hell out of me.

— A Taxi Driver: Los héroes de Gwangju (2017)

Si se lo pides, te ayudará.

If you ask him, he will help you.

Y hasta lleva los paquetes si se lo piden.

And he even carries the packages if asked.

— Taxi Express (1998)

Te ayudará si se lo pides.

He will help you if you ask him.

Si se lo lleva, morirán.

If he takes him away, they'll die.

— Atlantis: El imperio perdido (2001)

Si se lo traes a la mujer, sabrá que no soy tu esposa.

If you bring it to the woman, she'll know I'm not your wife.

— El ladrón (1997)

Incluso podría jugar Candyland contigo, si se lo pides.

He might even play Candyland with you, if you ask him to.

— La asistenta (2025)

Podría tocar el violín con su hermana, ¿pero si se lo quitamos también?

He could play the violin with his sister, but what if we take that away from him too?

— Ha vuelto (2015)

Si se lo permitimos, nos volverá a joder.

If we allow it, he'll screw us over again.

— Un simple accidente (2025)